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Oversized Exterior Doors

Oversized exterior doors are a challenge for any door manufacturer. Oversized exterior doors can be very large and can run very heavy. These big doors require heavy duty extra strength exterior door hardware to accommodate such a weighty door. Other problems include difficulty to transport and install due to the size, stress and strain on the hardware and the structure, and the likelihood of warping at the next season change, if not before.

Now you can fully enjoy these large spanning exterior doors which are fascinating and compelling as they garner the attention of anyone who encounters the beautiful oversized front doors without any of the headaches, thanks to inventor Peter Sing’s Sing Core.

Utilizing Sing ‘s patented and patent-pending oversized exterior door blanks, the biggest and best door manufacturers, millworks, and custom large door builders are able to design and build oversize exterior door products which will not fail.

Sing’s high-quality custom front doors includes a highly diversified selection of exterior doors designed for larger and more specialized applications in educational, scientific, industrial, and military channels, where high performance, attention to detail, safety, security, longevity, and sustainability are highly valued features.

The perfect exterior doors are Eco-friendly, lightweight, high strength, fully insulated, high precision, and guaranteed fail free for 50 years. Sing offers a full 50-year warp-free and structure guarantee. That’s fifty years of maintenance-free enjoyment of all your oversize exterior doors, which have Sing Core inside.

Spanning the vast variety of exterior door styles, your exterior single door, double door and doors of enormous size can feature any available flat building material, such as aluminum, brass, cement, cold rolled steel, concrete, diamond plate steel, fiberglass, Formica, FRP, galvanized steel, hot rolled steel, HPL, Kevlar, Masonite, stainless steel, and any available wood species.

Large modern front doors are fiberglass and steel exterior doors which seem to be standard fare among the large exterior door manufacturers, but thanks to Sing’s core, front doors and exterior doors and now be made of nearly any building material, even solid wood stave.

While fiberglass exterior doors are the standard response to exterior door applications, followed by hybrid steel and wood doors, thanks to Sing’s door core which is specifically designed for oversized exterior doors, any front and exterior door can be made of natural wood grain.

While Sing Core does not actually build doors, they do empower door manufacturers and millworks who design and builds wood doors and panels to your exact specifications the ability to make any door of any material and guarantee such door to remain warp-free for 50 years, guaranteed. The structure strength is also covered including not having to worry about delamination as well.


The result is you’re being able to enjoy all the elegance of solid wood entry doors, without any of the stress or stain associated with exterior doors which plague those who must deal with them endlessly over time, saving both time and money associated with regular maintenance.

Your wood entry door could have Sing Core inside, as well as each entry and patio doors, which is the perfect fit for any exterior or custom door, from exceptionally large foyers to commercial steel doors all with Sing’s comprehensive 50-year guarantee, as is the case with all of Sing’s entry and patio door products.

Even large entry doors, like these large red church doors, which are 100% exposed to the weather, replacing the regularly failing oversized 6-panel entry door system, are now able to operate as storm doors which are virtually weatherproof security doors while still retaining the appearance (or “feeling”) of the original 6 panels entry doors. This effect was achieved by adding molding to the oversized exterior flush doors prior to applying primer and paint.

Regardless of your large opening door systems, you can rest assured that you can have a 50-year guaranteed no fail exterior door system featuring the highest quality custom entry doors by contacting your favorite door manufacturer, millwork, or large custom exterior door builder, and specifying that you want, “Sing Core inside.”

Sing’s True Flat Team works in tandem with your supplier to provide you with the high-quality wood and fiberglass front doors that make the best oversized exterior doors, and many other endless applications as well.

Exterior Doors Gallery

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Exterior Steel Double Doors

Exterior steel double doors are an impressive way to adorn any major egress point, especially as the double front entry doors for a durable steel front or garage-to-home entryway. Exterior steel double doors are most commonly used as entry and patio doors in the most contemporary architecture and design of exclusive high-end homes.

Exterior steel double doors may feature large lite openings for glass inserts to create the French door look in the double door system, which can add an elegant element to a more industrial design style. In fact, you can specify any glass exterior steel doors, just send us your drawing.

As you might guess, solid core exterior steel doors extremely heavy and the weight could cause problems with transportation, installation, hardware, stress and strain on the structure translating to huge maintenance costs over time.

You could build a lighter weight version, using a foam or honeycomb core, but if your looking at anything over 7ft tall or 3 and half ft wide, you will have a lightweight but unstable door. That’s where inventor Peter Sing’s patented and patent-pending exterior steel door substrate comes in.

Sing’s invention enables metal door manufacturers to build lightweight exterior steel doors that are fully insulated (R3.5 to R6.5) for climate control and sound-dampening, stronger than solid steel pound for pound, incredibly resilient (660+ PSI), high precision (.006 in. tolerances), and can be guaranteed not to warp, bend, twist, or otherwise fail for 50 years. There is no other way to accomplish all this.

Steel exterior doors could present even greater problems because one side faces the elements while the other side faces the structure’s interior, a certain recipe for failure, unless your steel exterior door has Sing Core inside. To make matters potentially worse, multiply the potential for problems times two in the case of exterior steel double doors. Admittedly a single door will present half the problems of exterior steel double doors.

Sing Core is the source of energy efficient Eco-friendly commercial steel double doors the world ‘round. Even so, the majority of Sing’s double door steel doors are found in the greater New York region. You may be surprised to find that your Sing steel double door originates from the serene Pacific Northwest in the heart of Washington state, are proudly made in the USA by local artisans of locally sourced materials, ensuring you the best exterior double door system.

Whether you’re looking for a single door entry door with insulating core or a sustainable steel patio pre hung double door, having your doors made with Sing’s patented exterior steel door blanks as the basis of your door can put you miles ahead of the other steel doors available today.

The largest door manufacturers in the world come to Sing’s True Flat Team when they are faced with a project featuring one or more large oversized exterior steel doors knowing it is the only way to guarantee customer satisfaction over time. While there are many ways to build average-sized steel doors with little threat of failure, those big exterior steel doors are problematic and are routinely excluded from the warranty which covers the remaining of the steel door schedule.

Only Sing’s premium steel doors with high definition panels inside can deliver such lightweight, high precision, and long-lasting life and satisfaction, all backed by his 50-year warp-free and full structure guarantee.

That said, many pre hung exterior steel 6 panel double doors have Sing Core inside and the end user way never even know. All they know is that their modern steel door company has provided them with oversized insulated exterior steel doors which are not excluded from the other steel doors covered by the steel door company’s warranty.

Sing Core is a key provider to government, scientific, law enforcement, and military for superior steel exterior security doors used in a variety of applications where safety and security performance is of the highest importance. When safety and security matters, you want a steel security door or steel double door which outperforms other exterior steel door entry doors in terms of sound deadening, impact resistant, bulletproof, and blast proof. Note, inventor Peter Sing says, “You kick my door, you break your leg.”

Sing’s commercial steel double doors are by far the best of class in insulated exterior steel doors and are available in prehung exterior steel 6-panel double doors as well.

Isn’t it time all your doors had Sing Core inside?


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Exterior French Doors

Exterior French doors are increasing in popularity because they encourage a natural connection between a structure’s interior and the great outdoors, especially if maintaining such a connection increases quality of life by being able to enjoy the visual impact of scenic surroundings or for other reasons, such as safety and security.

They are fashionable, can be unique, and framed with attention-grabbing materials such as natural wood grains for that classic look, or metals for a more industrial appearance. Exterior French storm doors may be made of weatherproof materials, such as fiberglass-related products.

What makes a door French, is the inclusion of a large glass cut out equivalent to one-third or more of the door’s surface area. The glass opening is what makes this design so attractive to those who love them.

When a little privacy is desired, a curtain or blinds may be hung and released to cover the otherwise transparent opening of the French door’s glass, though French door glass may also not be transparent and could range from anything opaque to frosted, or stained glass, and may even include a one-way mirror, depending on the application.

Double French Doors Exterior

The greatest impact from an exterior front door access point is by installing double French doors exterior facing entryways. These particular double French entry doors are not standard off-the-shelf French front doors. That means, you specify the characteristics you want to see which adds so much value and curb appeal to your double French Doors exterior.

You can choose from any available surface material, such as any natural wood grain, aluminum, brass, concrete or cement, cold rolled steel, diamond plate steel, fiberglass, galvanized steel, hot rolled steel, Kevlar w/Lexan, Masonite, or stainless steel, just to name a few of the nearly endless possibilities.

French front doors are definitely leading the pack in contemporary architecture and design by adding more material to otherwise just plain glass openings for added artistic character.

Warp-free French Doors

While an exterior French door is exposed on both sides to varying climates (one side facing the exterior and the other the interior) this is a certain recipe for door failure due to door warping. That is, unless your French entry doors have Sing Core inside.

All wood French doors exterior are guaranteed to remain warp-free for 50-years, personally guaranteed by inventor/president Peter Sing. Sing’s patented and patent-pending warp-free core material for external French doors is especially designed to prevent any wood French doors exterior from warping.

How to Get French Doors with Sing Core Inside

You can get them from any location that features exterior French doors for sale near you. Though the retailer must have a service for supplying “custom French doors.”

That is, to say, they already have the partners, such as millworks and custom door manufacturers, whom they work with to have their custom French door built for their clients.


Because Sing Core does not build doors. Sing Core does supply the world’s biggest door companies to build doors of enormous size while providing their customers with a 50-year warp-free guarantee (or at least their standard door warranty on doors which are usually excluded from the warranty due to their size).

So, Sing Core works hand-in-hand with your favorite door company’s custom door manufacturer or millwork to provide you with the best prehung exterior French doors in the world.

If you were to order any Exterior French Doors directly from Sing Core, you might be sorely disappointed, as Sing Core provides the millworks and custom door manufacturers with the raw, unfinished materials to make the best and most beautiful large French doors ever, with the most extraordinary 50-year guarantee in the industry.

It takes a specialized team to build the best exterior French doors in the world, and Sing Core is the only way to do it with the highest precision, and highest performance over time, guaranteed by president and inventor Peter Sing

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Extra Wide Exterior Doors

You want them. They’re so impressive. They’re nearly impossible to get or have custom-built, and those extra wide exterior doors look magnificent when they are expertly designed and installed, only to disappoint at the following change of weather, because those extra wide exterior doors are likely to fail not long after installation.

What are you going to do?

If you find a custom millwork who is brave enough to build your extra wide exterior doors, it is certain they will have you sign a waiver of exclusion from any standard warranty they might offer on any of their other work on your project (which is normally a year). This is common for any unconventionally wide doors.

As all experienced millworks and custom door manufacturers know, a wide door is going to present problems for door warp. It’s simply the nature of the building materials which will move according to changes in the environment. Especially for extra wide external doors because one side faces the interior and the other faces the elements. This is a certain recipe for failure.

When the temperature is different on either side of the door, it will move. When it rains, or sunlight falls directly on the door, change in barometric pressure, just about any change will cause the door to move.

This is accepted as a standard in any type of door. In fact the AWI standard for a regular-sized door is to allow up to ¼” movement for any door up to 7 ft. tall and 3-and-a-half ft. wide to be considered “normal.” All door hardware is constructed to allow for this variance.

Once you exceeds the height and width of what is considered “normal” the differences are increased exponentially, and it doesn’t take much to have your wide doors become inoperable as they warp, bend, twist, or otherwise fail due to movement which will naturally occur.

That is, unless your extra wide exterior doors have Sing Core inside.

Lightweight High Strength Sing Core

Inventor Peter Sing’s patented and patented-pending wide door building technologies allow the biggest and best door manufacturers in the world to produce large doors of enormous size which can be covered by Sing’s

50-year Warp-free Guarantee

If you are a premiere door manufacturer dealing with high profile clientele, you really want to deliver the goods when it comes to that one-of-a-kind extra wide front door. You don’t have to disappoint your customer because now you can offer Sing’s 50-year Warp-free Guarantee, which guarantees that your door will not warp-, bend, twist, or otherwise fail for fifty years.

No need to be afraid about that extra wide entry door in your latest door schedule because you can now offer a full 50-year guarantee for any extra wide door built with Sing Core inside.

Endless Design Possibilities

Sing Core empowers contemporary architects and designers to create doors of impressive proportions in any available wood species, door skin material, glass texture, size or shape. You are now set free to create any modern extra wide front door without hesitation or fear of failure, thanks to the true Flat Team at Sing Core.

You are not limited to any design style, number, shape, or style of lite cutouts for custom glass inserts, or surface material, for Sing Core is a predominant supplier of the best large wood, aluminum, brass, fiberglass, glass, HPL, and steel exterior, interior, storm and patio doors in the United States, and Sing Core products are proudly sourced and made in the USA.

The possibilities are endless as you team up with Sing Core to build your next large custom extra wide contemporary front door, and don’t be surprised when you discover that for the most part standard extra wide exterior doors are pivot doors and sliding doors which though they could be made of any flat building material, feature either beautiful natural wood grains or fiberglass and steel as extra wide entry doors.

What will your next door for extra wide openings look like, will you consider wide front doors used double wide front doors, or a pair of French doors to add that special appearance to any extra-wide doorway.

Remember, you can have any size or shape of lite cutout for your custom glass inserts, to create your best extra wide exterior doors for you or your upscale clientele.

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Exterior Door Skins

Looking for exterior doors? Some are known to be better than others. You might know what you want, but is that the right exterior door skins to use on a door which may present challenges not long after installation?

The exterior surface material of your door (referred to as “door skin”) is a huge decision to make. While you might absolutely be able to see a particular type of door in your mind’s eye, you may find the door you’ve set your sights on will offer you far more problems than aesthetic beauty. Definitely worth considering before you settle on your decision to select certain exterior door skins over others.

For instance, some flat building materials that you might like to use as exterior door skins may be sensitive to changes in the environment and may have a problem facing the elements or extreme weather conditions. The good news is, new external finishing products are emerging regularly to help protect underlying surface materials from moisture penetration.

These new technologies can be helpful in protecting metals that might rust or natural woods which might soak up rain, like a sponge.


The world’s best millworks are fully up to speed on all these latest technologies which help to protect your exterior door objet d’art from the elements. This helps solve one-half of the dilemmas which face door engineers and technicians. Then, there is the other half: Door warp.

Pretty much, all doors warp to some degree, so the American Woodworking Institute has established a standard for doors, which basically says that any door which does not deflect over one-quarter inch over a seven-foot-span is straight. Any deflection over a quarter of an inch would be considered as “door warp.”

All doors, door jambs, and door hardware take this ¼” variance of “straightness” into account in the design of all the adjoining components.

That’s where inventor Peter Sing’s patented and patent-pending Sing Core comes in.

With the advent of Sing Core’s warp-free door blanks, the top door manufacturers in the world can create oversized exterior doors of any size which can be guaranteed not to warp, bend, twist, or otherwise fail for 50 years. This is an unparalleled 50-year warp-free guarantee which was unheard of in the door industry previously.

There is little doubt that natural wood grain poses the greatest challenge for door warping in exterior door application. As beautiful as wood grain is, it is notorious for moving according to environmental changes. No matter how well you protect it from the weather by sealing the door completely (which is an important part of the process) wooden doors will warp, unless they have Sing Core inside.

Sing’s groundbreaking technology empowers architects to spec the most contemporary architectural doors made of ornate wood grains in any size, even large oversized doors, that can be guaranteed not to warp for 50 years, and Peter Sing puts his signature on the line.

Most of the most contemporary architects are willing to spec a sixteen- to twenty-foot-tall door with Sing Core inside without hesitation, though other industrial aerospace and military projects could feature large sliding doors reaching 70 ft. tall and over 200 ft. wide.

No matter what size your large sliding door is, if its 100 percent exposed to the weather, you don’t want it to warp, and there’s only one way to create such a warp-free door, and that’s with Sing Core inside.

Now, you can have natural wood grain skins on your exterior doors without fear of failure for the most sustainable exterior doors ever made in the USA and guaranteed for 50 years.

Wood Grain Exterior Door Skins

Not limited to wood grain doors (which are the most challenging), you may also use any other available flat building material and receive the same high precision and 50-year guarantee.

Other Exterior Door Skins

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Save Thousands on Your Next Order

There is a new door making technology to build door blanks for door manufacturers and millworks for any type or design of door with almost any door skin for less guaranteed by inventor Peter Sing. Less than half the labor of stile and rail door. You can save hugely on entire door schedule and get our 50-year warp-free guarantee on all your doors.

With our patented core technology and high production capacity, we are able to produce the highest quality doors at a very low price with very quick turnaround times. 

By making the same size doors, we can cut the production time in half. We add special solid edging to the doors so you can trim them yourself.

We were able to bring a customer’s order total down from

$27,500 to $13,500

for a total of

$14,000 in savings.

We did this by changing their order of 21 different door sizes down to 4 different door sizes.  The customer easily trimmed their own doors. SingCore gave the same 50 year no-warp guarantee to this customer’s order.

Here is what their order looked like before we offered them half price on their order if we could reduce the variations of door sizes:


Quantity Application Description
1 Pocket Door 106.5″ x 45.0″ x 2.0″; 1/8″ 
2 Pocket Door 106.5″ x 23.5″ x 2.0″; 1/8″ 
7 Pocket Door 106.5″ x 31.0″ x 2.0″; 1/8″ 
1 Pocket Door 106.5″ x 38.5″ x 2.0″; 1/8″ 
1 Hinge Door 106.5″ x 31.0″ x 2.0″; 1/8″ 
1 Hinge Door 106.5″ x 30.0″ x 2.0″; 1/8″ 
1 Pocket Door 106.5″ x 30.5″ x 2.0″; 1/8″ 
1 Pocket Door 106.5″ x 20.5″ x 2.0″; 1/8″ 
1 Pocket Door 106.5″ x 30.0″ x 2.0″; 1/8″ 
1 Hinge Door 106.5″ x 33.5″ x 2.0″; 1/8″ 
1 Hinge Door 106.5″ x 34.0″ x 2.0″; 1/8″ 
1 Pocket Door 106.5″ x 37.0″ x 2.0″; 1/8″ 
1 Pocket Door 106.5″ x 31.0″ x 2.0″; 1/8″ 
1 Hinge Door 106.5″ x 31.0″ x 2.0″; 1/8″ 
1 Pocket Door 106.5″ x 33.0″ x 2.0″; 1/8″ 
1 Hinge Door 106.5″ x 34.5″ x 2.0″; 1/8″ 
1 Pocket Door 106.5″ x 46.0″ x 2.0″; 1/8″ 
1 Hinge Door 76.0″ x 24.0″ x 2.0″; 1/8″ 
1 Hinge Door 80.0″ x 36.0″ x 2.0″; 1/8″ 
1 Hinge Door 106.5″ x 28.5″ x 2.0″; 1/8″ 
1 Hinge Door 106.5″ x 19.0″ x 2.0″; 1/8″ 

Here is what the client’s order looked like after we had negotiated removing many of the variations of door sizes:

Quantity Application Description
6 Other Door 106.0″ x 40.0″ x 2.0″; 3/8″
7 Other Door 106.0″ x 36.0″ x 2.0″; 3/8″ 
16 Non-Door 106.0″ x 27.0″ x 2.0″; 3/8″ 
1 Non-Door 106.0″ x 19.0″ x 2.0″; 3/8″ 

A typical order from a customer may consist of many different variations of door sizes. The different sizes of doors take us longer to full fill an order. If instead you place an order with all the same size doors, we can streamline our manufacturing process which saves us time and money. We in turn share those savings of time and money with you.

Let us do the most labor intensive parts and you finish the rest to build the best door in the world, especially very large door, but our standard-sized door panels are very affordably priced.

SingCore Applications

Our patented core technology has been used in many applications. Click the links below to see how SingCore can help you achieve your aesthetic and business goals:










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Vibration Proof Doors and Panels

Sing Core has developed a new hermetically sealed shock absorbent panel which has lightweight insulated Sing hybrid core which is long known to be stronger than steel pound for pound (660+ PSI) is in the center of the door or panel.

The new Sing vibration proof door cores and panels are designed for sound absorption as well as absorbing other types of vibration and providing floating separation between composite and neighboring components.

Thereby, preventing transmission of gasses, sound, and thermal influence between surfaces, while hermetically sealing the contents for the perfect low volatile organic compounds (VOC) door or panel solution for use in museums, scientific laboratories, and highly controlled areas.

Wide variety of applications include everything from refrigeration and climate control to equipment enclosures and high-security impact resistance, and sound proofing.

This new vibration proof technology assists industry-wide dampening of a variety of vibrations in the transportation industries including automotive, truck, rail, marine, and aerospace division where minimizing vibration transfer can yield huge benefits.

For years Sing Core has been used inside boat hulls, bulkheads, decks, roofs, floors, and doors in all manner of high-end boats and yachts.

Effective in the maximization of vibration control for machinery industrial applications abound as well as throughout the home, business, and locations which house equipment which is responsible for sound transfer, including HVAC ducting and metal plenums.

Sound isolation has never been so lightweight and high strength. Until the invention of Sing Core, preventing sound transmission required mass and heavy materials which could compromise the entire project, especially in areas where weight could have a significant impact on a structure. This is far more potentially troublesome for seagoing vessels or aircraft, where Sing Core’s solution fits like a glove because lighter is better, especially if you can achieve structural integrity.

In the theater, on stage, or cinema playhouses, Sing sound absorption and vibration control doors and panels are versatile and can be custom designed and built for you custom wall, floor and ceiling assemblies, such as those used among high tech industrial venues, government, and military installations.

Decreasing sound and vibrational transmission of anything from multistory footfall to heavy equipment floors.

Vertical applications such as firewalls, doors, cabinets, and more.

Increasing separation between adjoining spaces such as temporary walls, acoustic room dividers, stages and portable floors in residential and commercial buildings.

Sound isolating doors and panels can offer huge advantages to preserving the audio spectrum in recording studios, amidst high volume sound equipment, musical instruments, and speakers at various locations, while providing sound blocking capabilities from outside environmental audible interruptions.

Amidst the scientific community, controlling sound and other vibrations near sensitive scientific devices can be critical in the monitoring and measurement of the infinitesimally small.

If you are challenged with the securing of vibrational or sound influences from beyond your individual space from mechanical noise and vibration through existing structures like walls, floors and ceilings, then Sing Core may be just what the doctor ordered.

Contact Sing Core for more information.

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Fire Rated Fire Proof SingCore Doors

When you need a door to protect your family, defend your business, and exceed state, local, and federal requirement for fire rating and durability, then look no further than SingCore. Our doors excel beyond all other fire rated doors in a variety of areas including:

  • Overall strength (stronger than steel by weight)
  • Straightness (guaranteed for 50 years)
  • Lightness (up to 1/3rd the weight of a comparable wooden door)
  • Beauty (available in a wide variety of materials and styles)
  • Usability (cut our panels just like wood. No special skills needed)
  • Eco-friendly (made of Earth friendly materials)

What is fire resistant door?

A fire resistant door is designed to slow or stop the spread of fire throughout a building. Fire resistant or fire retardant materials such as doors can play a key role in the safety of a structure during a fire emergency.

Don’t let the blaze catch you unaware! You need the very best and most reliable fire doors in the business.

How much does a fire rated door cost?

Here at SingCore, we make ever rated fire door customer to meet your size and usage requirements. We like to think that no idea should stay in your imagination. We endeavor to make every dream a reality.

To this end, we attempt raise to every occasion. As such, there is easy to quote price available to hand for any particular door. Each door is designed specifically for your needs.

The fastest way to get a price on your project is to submit a price quote request directly to our estimating team via our website

Are steel doors fire rated?

Steel doors may or may not be fire rated. Merely being a steel door is not enough to guarantee that it will preform safely during a fire emergency situation. Fire doors must be certified by a qualified and accredited professional.

SingCore is able to provide certified fire rated doors. (Certified fire ratings may incur an additional cost.)

How do I know if my door is a fire door?

Your door should have came with documentation certifying its provenance as a fire rated door. Some doors may have their fire rating stamped or otherwise indicated on the door panel itself.

Which doors need to be fire doors?

The placement, rating, and number of is heavily dependent on the requirements of your local governing bodies, and my necessitate compliance to federal, state, and potentially county or city level requirements. Often, the use, design, and occupancy of a building may influence the total requirements in effect.

The best way to determine the fire door requirements in your area is to contact a construction or engineering professional in your area and ask for a consultation on your specific case.

What qualifies as a fire door?

Fire doors require specific certification from qualified individuals who are rated perform safety analysis on door.

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How to Get Sing Doors for Less than $120

Everyone knows that doors made with Sing Core inside save you money in the long run, because each door with Sing Core inside is built to last for centuries and guaranteed not to warp, bend, twist, cup, or otherwise fail for 50 years.

Everyone also knows that using patented and patent-pending Sing Core technologies to build a door are not inexpensive, but did you know?

We Save Our Clients on Entire Door Schedules

Without compromising any details, and your whole door schedule could be fulfilled with doors that have Sing Core inside, at

Less Than You Pay for Your Regular Doors!

How Sing Core Saves Your Thousands of Dollars on Your Door Schedule

You can achieve the same Sing pricing advantage as our regular clients do, if you know how. That said,

Here’s How It Works


Our regular customer has a door schedule with 1 large door, and 42 normal-sized paint grade doors

Qty Pivot Door Price each Ext
1 pc. 60 x 120 $4,823.00 4,823.00
Qty Hinge Doors Price each Ext
4 pcs 24 x 80 $ 503.53 2,014.12‬
20 pcs 34 x 80 713.34 14,266.8‬0
6 pcs 36 x 80 755.30 4,531.80
12 pcs 30 x 80 629.42 7,553.04
Total: 33,188.76

Notice we haven’t gotten the price down, yet. (Most clientele just buy the big door at $4,823.00 from Sing Core, then get the rest from other vendors.) Keep looking to find out how to get your cost of your regular doors for less than $120 and

Save over $‭23,00.00 delivering

50-Year Guarantee Doors

Here’s how the Big Boys do it:


Pivot Door Price Discount Ext
1 pc. 60 x 120 $4,823.00 50% 2,411.50

And reducing the regular-sized doors to two sizes of doors which can be trimmed on site or in house (2 sizes U-trim)

Hinge Doors Price Discount Ext
16 pcs 30 x 80 $ 629.42 75% 2,517.68‬
26 pcs 36 x 80 755.30 75% 4,909.45
Total: 9,838.63

Your net cost per regular sized door:


Submit a Price Request for more information.

Discount Price Breakdown


Total of all 43 doors: 9,838.63
Subtract price of big door: – 4,823.00
Cost of remaining 42 doors: 5,015.63
Cost each (42 doors): $119.42


If you have a commercial door project coming up with a quantity door schedule, Sing Core can help you Win the Bid by delivering the highest precision and performance doors at the lowest quantity pricing with quick turnaround.

Math formulae

629.42 * 16 = ‭10,070.72‬ Disc: ‭2,517.68H‬
755.30 * 26 = ‭19,637.8‬0 Disc: ‭ ‭4,909.45‬

9838.63 – 4823 = ‭5,015.63‬ / 42 = $119.42

33,188.76 – 9,838.63 = $‭23,350.13

Note: Prices shown are examples only. Actual prices may vary