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Storm Doors

Applications -> Building Components -> Doors -> Storm Doors

Sing-tropical-storm-doors-used-by-NASA-Boeing-United-States-NavySing Storm Doors are severe weatherproof flush doors or French doors that can feature any size or shape of lite opening/window cut-outs that will accommodate impact rated glass.

When discriminating architects, homeowners, designers and the most high-end millworks are seeking to find storm proof front doors or tropical storm patio doors, they have come to trust the unique high performance of Sing Storm Doors as their long-term solution for exterior doors that are 100% extremely exposed to unbridled elements.

Sing Storm Doors are superior functioning high security storm doors that are featured in many a hurricane-proof house, while maintaining the elegance and beauty of the natural appearance of wooden storm doors.

Wood Storm Doors

Sing Core has the ability to provide extreme weather resistance in wooden storm doors by starting with the patented material invented by Peter Sing.  Everyone knows that it is impossible to use a solid wood door as a storm door because wood (due to its innate natural qualities) will bend, warp and twist.  This movement will cause the door to fail, either in the seal between the door and the frame or by compromise the protective coating of the beautiful wood storm door.

One small crack in either the surface or the seal could cause the loss of your home.  That’s why upscale hurricane-proof homes can feature Sing double storm doors or custom storm doors with the highest confidence that your investment is protected, leaving you safe and secure when storms start brewing, which also puts less pressure on federal emergency management.

Sing-Core-Hurricane-Door-Exterior-InteriorHurricane Doors*

Introduction of the Sing Hurricane Door* was an instant success, with its fiberglass exterior surface on the one side and beautiful wood (or any other flat building material) interior surface for unparalleled hurricane protection*, high performance, beauty and elegance.

Even though Sing hurricane doors come standard as French storm doors in their appearance, Sing Core has the ability to alter the design to duplicate the look and feel of any other kind of door regardless of being a tornado safe storm door or not.

It is this ability for any Sing Storm Door to look like any door – all you have to do is provide us with a picture – and we can match the appearance of a pre-existing door if it is a replacement, or your dream decorative storm doors that have our fans depending on us to go the extra mile.

So, whether you’re looking for hurricane panels, hurricane doors or even hurricane garage doors Peter Sing’s hurricane impact doors* will leave you feeling safe and secure when you need assurance most.

Stainless Steel Storm Doors

Sing Core makes the most Eco-friendly lightweight, high strength, fully insulated metal storm doors in the industry, bar none.  That’s why NASA, Boeing and the US Military branches trust us with their high performance metal impact entry doors.

Our metal doors for steel storm shelters or other applications are available in your choice of Sing Metals including aluminum, stainless steel, galvanized steel or any type of metal based on your specifications.

*Customer will need to perform lab tests to certify hurricane rating for local code compliance.

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New Door Technology

Applications -> Building Components -> Doors -> New Door Technology

There is a new concept in Eco-friendly door manufacturing that raises the question:

“Is Sing Door Core a better way to build doors than any other type of door?”

New-French-Door-With-Glass-Lite-Cut-outsSing Core’s patented door core has the unique ability to build a true-flat, weather proof/water tight, lightweight door that is stronger than steel and will remain flat for centuries, covered by our 50 year true flat guarantee (compare to other door companies’ warranties that do not cover when used in exterior applications). This new technology allows nearly limitless customizations allowing clients to design any door imaginable in any configuration, style, appearance and/or feature any flat surface material. Our French doors come complete with custom lite opening cutouts to your specifications in any size or shape. Glass doors can be combined with true raised panel doors for the most high precision patented Sing door core (within .006 inch tolerance) affordable American made doors.

Sing Core is a new advancement in door building technology that is bringing door-related jobs back to America.

New Sandwich Door vs. Stile & Rail and Wood Door

SING DOOR STILE & RAIL and WOOD DOOR
Visually impressive Visually impressive
True flat Depends on wood and craftsmanship
Stays flat for centuries Will warp, bend, twist over time
Weather resistant Weather exposure will cause door to fail
One-piece construction Many pieces, each piece is a weak spot
High strength Moderate strength
Lightweight Heavy
Insulated No insulation
Highly customizable Choose from variety of designs
Affordable Handcrafted = expensive / import = cheap
Made in the USA Yes / No

sing-core-french-door-10-lightThe idea of building doors with a “sandwich panel” is not new. A sandwich panel consists, basically, of a core material (like a paper honeycomb material found in most inexpensive lightweight doors, or particleboard found inside less expensive heavy doors, while high-end doors may use expensive LVL or solid wood stave core but cannot be guaranteed true flat) sandwiched (glued) between two exterior surface materials – or “skins” – to form a composite panel suitable for creating a door.

Don’t be fooled by door companies who advertise that their doors contain “honeycomb core,” because they may be using paper honeycomb core which has little core value. Make sure you inquire as to whether your door has patented Sing Core, aluminum core or plastic core. Know what your core value is before you buy your door.

Patented Sing Door Core presents an entirely new set of advantages over other types of core materials that result in insulated doors that last for centuries due to the strength and lightweightness of Sing Core. See table of core comparision.

This new door manufacturing technology makes it possible to create the most versatile doors with a nearly unlimited range of design capabilities without the need of framing or antiquated stile and rail door building methods.

Sing Core could be the least expensive high strength, true flat core material ever invented.

Stile and rail and wood doors are labor intensive causing many of the door companies in the United States to seek off-shore solutions and import doors to reduce the price to the end consumer.

The invention of Sing Core is bringing custom door manufacturing and the jobs associated with it back to the USA. This is due in part to providing American door manufacturers with a base material (Sing Door Core) that enables them to build an insulated, high quality, lightweight, high strength door in any style, without labor intense stile and rail door building methods.

Doors made with Sing Door Core can be made to any size, easily be modified to simulate stile and rail multi-panel design, quickly and easily be custom cut for any size or shape of lite openings for glass placement, and can feature any exterior surface material. See photos.

Doors made of Sing Core shine across the door industry as metal doors, cement board doors, FRP doors and STC sound rated* doors while appearing is door applications as flush doors, French doors, sliding doors, pivot doors, bi-fold doors, entrance doors, interior doors, carriage doors, garage doors and barn doors. Even now, we are working with bullet proof door industry.

All this at a fraction of what it would cost in labor costs to build a stile and rail door made in the USA.

LESS ENERGY – LIGHTWEIGHT – HIGH STRENGTH – SUSTAINABLE

Composite materials, like Sing Core, are leading the wave of new advancements in material science that are taking these new technologies into the future. These revolutionary technologies focus on reduction of energy consumption both during the creation process and in material handling. The newest advancements address common issues associated with weight and strength. Other major concerns are in sustainability. Sing Core excels in all of these, while being extremely affordable and proudly Made n the USA.

Patented Sing True Raised Panel Doors

High quality Sing Core Doors are affordable compared with other types of stile and rail doors, raised panel doors, French doors, carriage doors, sliding door, etc…

A raised panel door gives you that classic look of a 3-dimensional door that becomes a focal point and statement by the designer and/or homeowner.

Traditional raised panel doors have been made the same way for hundreds of years, in recent years technology has been introduced to simulate this style at an affordable price. Price being a concern has led to more off-shore imports flooding the builders’ supply markets.

Case Study: 125-year-old New York Church

Church-Doors-Goshen-United-Methodist-Church-New-YorkIn this 125-year-old church project, the Sing True Raised Panel Door was the perfect solution to address the challenges.

Problem: Exterior wood stile and rail doors fail, bend, warp, twist; requiring continued maintenance and repair.

Solution: Sing True Raised Panel Doors, guaranteed true flat – and stay flat – in exterior application, while matching original 125-year-old raised panel design.

Details: Sing Core expertise in matching client’s specifications and requirements based on patented technology that can deliver true flat, lightweight and high strength doors in any size, that can be guaranteed true flat per your specific performance standards. In this case 6 weatherproof Sing True Raised Panel doors were required to replace 6 125-year-old exterior wood doors in an effort to eliminate regular maintenance and repair challenges of previous wood stile and rail doors.

Specifics: To address the issue of weatherproof and flatness integrity for centuries, the Sing design team’s solution included Sing Panels made of Sing Core door core reinforced with aluminum and a marine grade plywood exterior skin. To match the appearance of original traditional raised panel doors, additional wood trim was added atop the panels to match the 125-year-old previous door design. A perfect match with superior performance eliminating constant maintenance.

Note: The true flat weatherproof aluminum and marine plywood composite Sing Door is the solution for any exterior door of any size including large doors.

What is a Sing Raised Panel Door?

Sing Core introduces the True Raised Panel Door. The unique design of the Sing Core Raised Panel Door capture the original intent and look of a traditional raised panel door, but offers advantages that cannot be found otherwise.

Other raised panel doors offer little structural integrity. The structure can easily be compromised by little more than kicking the door causing it to break apart at the seams. In contrast, if you were to kick a Sing Core Raised Panel Door you would break your foot.

The secret is in the core of the Sing Core Raised Panel Door. The center of the door is solid as a rock, is resistant to warp, twist or rot and can be guaranteed true flat by build up the surface of Sing panel with molding and decorative raised panels instead the conventional raised panel doors are cave in at some area less than 1/2 inch thick, Sing and cost much less than a traditional raised panel door, which is not really a raised panel door at all in comparison to the Sing Core Raised Panel Door.

All doors start with the basic Sing Flush Door

wood-flush-door-lightweight-strength

The best solution according to the Sing Core culture and philosophy is the most affordable solution of using an authentic flush door, though many artists and designers use the Sing Core Flush Door as substrate and add moldings and decorations to meet varying aesthetic specifications.

Add molding for true raised panel features

6-panel-door-them6-Panel-Single-Door-UsSide by Side Comparison

On the left is the traditional 6 panel “raised panel door” and on the right is the Sing Raised Panel Door that is a true raised panel door, unlike the door to the left. Visually, they look identical, but that is an illusion.

The one on the left is made of 15 pieces of wood assembled together and where the routing is at its narrowest connection-points the door is extremely thin. While visually appealing with a classic look, the door on the left can easily be compromised by kicking the door at any given seam. On the other had an alternative approach is to carve the designs into a solid piece of wood (which is similarly weak at the deepest carve-points).

On the other hand, the Sing door blank is the base used as door substrate, now you can add molding and raised panels on top for the true raised panel door result. Warning: Kick the Sing Raised Panel Door and break your foot, not the door. (We accept no responsibility for injury.) If you can break a sing door, we’ll send you a new one for free.

Plus, the Sing Raised Panel Door gives you all the benefits that come with having an Eco-friendly technologically advanced door that simulates the classic style of the traditional raised panel door.

That’s why many designers who are restoring classic architecture are using Sing Core to replace outdated structural materials and doors. Working with Sing Core, artists and designers are able to duplicate the look and feel of classic materials without having to compromise by loss of energy or unreliableness of traditional building materials.

Then Add Custom Lite Openings for adding glass

variety-of-design-options-for-architectural-doors-illustration-sing-core

Sing Core offers custom cut lite openings in any door to accommodate glass insertion specifications.

Advantages of Sing Core Raised Panel Door vs. conventional raised panel door

1 strength

2 lightweight

3 insulation

4 sound deadening

5 functions —no rattling sound when close the door—solid like rock feeling.

6 less labor to build means less cost for high quality door and production friendly for large order fast delivery.

7 50 years structure guarantee.—almost unbreakable,

8 easy to repair than any other type of door due to the structure Sing core and stress skin structure.

9 can be manufactured to meet any specifications

10 can be guaranteed true flat

completed-sing-core-6-panel-raised-panel-door-illustration

How to build Sing raised panel doors

How to install glass? Try our custom cut lite openings for glass installation.

True Raised Panel Door

A new door fabrication technology is changing hundreds of year door making tradition. Now high quality precision (Sing Core tolerance within .0006 inch) doors can be proudly manufactured quickly and easily in the USA. Patented Sing Core can be used in many applications, to include building entire homes.

1. True flat and stay flat
For a very demanding high-end door requiring extremely true flat Sing Core will take your opening task and build your Sing Door according to your expectations. See: How to build a true flat door.

lightweight-high-strength-doors-make-for-safe-fingers-and-toes-for-kids2. Lightweight
Sing Core weighs in at 4 to 5 lbs per cubic ft. vs. LVL or solid wood core which weight 35 lbs. to 45 lbs. per cubic ft. (Heavy doors are more difficult to manage, can be dangerous to install. Following installation, may put young fingers and limbs at risk.)

3. High strength
See the strength of Sing Core vs. other cores. Doors made of Sing Panels are one piece construction instead of conventional stile and rail doors joined together by wood dowels.

4. Insulated
Unlike wood or any other solid core door (with little or no insulation), Sing doors offer your choice of insulated materials to fill the torsion box voids to achieve your required specifications for R-value or sound-deadening.

5. All weather doors
Sing Core manufactures true flat weatherproof wood doors that stay flat with proper coating. Due to the unique qualities of patented Sing Door Core, the surface material remains straight and true, will not warp, bend or twist, which causes other doors to crack or water seeps in and the door fails. Also make excellent severe weather doors, like Hurricane Doors**.

These doors are 10 ft x 16 ft x 2 1/4" thick w/marine-grade plywood exterior.

These doors are 10 ft x 16 ft x 2 1/4″ thick w/marine-grade plywood exterior.

6. Any skin
See skin or door surface material choice.

7. Any style
Click here to see door varieties.

8. Any door size or thickness
From regular size door to the largest door (40 ft. in length) and doors over 6 inches thick. Just mentioning “custom size” to other door makers, like stile and rail, will result in extra charges and delivery delays.

9. Fast turnaround
This is where Sing Core shines; everything custom with fastest turnaround on rush jobs. If your job needs a solution now, Sing Core can have your doors (even if you need 700 doors) in less than 24 hours for rush order if we have the necessary components in stock (we maintain an inventory just for rush jobs).

10. Any lite opening cut
Only Sing Core offers custom cut lite openings to accommodate any glass inserts in any shape or size to your exact specifications.

11. Any specialty door
Sound deadening, fire rated, bullet proof…

If you know of any door that is better than a Sing Door, please let us know.

You don’t have to be a door expert to appreciate Sing Core advancements in door making technology. But if you are a door expert; you get it.

How to BuyMetal Composite Sing Core panels are true straight, light and strong.

To order Sing Raised Panel Doors submit an order form either by email, info@singhome.com, or print and fax it to: 360.495.4585. We’ll provide a quote within one business day. If you have questions, please contact us.

Easy Ordering

All we need to know is the length, width, thickness and what you desire on the exterior, and your custom specialty panels are made to order. Getting a quote for your specialty product, is easy, thanks to our simple online order system.

Bulk Discounts

If you’re looking for a bargain price, remember, the more you order, the less expensive your total order will be per piece. Quantity and wholesale inquiries are encouraged. Feel free to contact us for more information. Click here for Closeout specials.

Fast turnaround: In you’re in a rush, only Sing Core can be custom made within 24 hours and is proudly manufactured for you in the USA.

Fast delivery: Any thickness and almost any length, less than 5 ft wide, can be made with in 48 hours if it is rush order.

SINGCORE Raised Panel Doors are easy to order. You may choose from our stock panels or order custom sized panels. Our price is based on the length, width, thickness, and quantity. Submit a Work Order by fax or email, and we will give you a quote within one business day. If you have a tight budget, give us a call, we might have an alternative solution tailored to your needs.

 

* Note: STC rating varies according to size, thickness, skin, and other factors. Sing Core does not rate doors, although we are fortunate enough to have one of the best sound testing labs in the world, here in the Pacific Northwest. If you require a specific STC rating, Sing Core can build a door to your architectural specifications and have the resulting door tested at our rating facility for an official rating.

**Customer will need to perform lab tests to certify hurricane rating for local code compliance.

 

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French Doors

Applications -> Building Components -> Doors -> French Doors

sing-core-french-door-10-light

See: New American French Door

Sing Core French Doors are exquisite elegance with high function and performance in the most elite applications in homes and patios. When transitioning from one environment to another Sing Core French Doors offer a spectacular gateway, or offer protection from the elements when used as a barrier or access portal between interior and exterior conditions, while providing a beautiful panoramic view of the landscape.

Sing Core French Doors come complete with complimentary lite opening cutouts allowing the beauty and luminance of the outdoors to visit the interior of your home when installed either in single or multiples to provide an impressive focal point to your classic home, office, restaurant or other commercial application.

Sing Core French Doors are available in any size (up to 50 feet) or shape per your specification and can be used in sliding door configurations. Sing Core specializes in large oversize doors.

The Sing Core Difference

Due to the unique advantages of the Sing Core heart of Sing Core French Doors, they are imbued with qualities that are far superior when compared to other traditional or commercially available French Doors. Our patented new door technology incorporates the space-age core that is extremely lightweight, yet stronger than any other material used in the aerospace industry at a fraction of the cost.

Lightweight

Sing Core French Doors are much more lightweight than French Doors manufactured by other door companies due to the unique properties of the patented Sing Core used in the design of these doors.

Strength

sing-core-french-door-architectual-drawingIn terms of strength, Sing Core is stronger than steel pound-for-pound and compression strength is rated at 660 PSI. Our solid Sing Core Door design is warp, twist and rot resistant, can be extreme weather proof, and is much stronger than traditional stile and rail configurations that breakdown and weaken overtime, or fail at the joints under extreme conditions.

Insulated

Sing Core French Doors are pre-insulated; allow sunlight in for natural solar advantages and energy efficiency. Enjoy enhanced peace and quiet between varying environments due to the superior sound-deadening qualities of Sing Core French Doors.

Eco-Friendly

Sing Core French Doors are manufactured of natural wood and recycled foam components and bonding materials (adhesives) are formaldehyde-free. The construction process uses less energy, manpower and produces little or no waste. Due to Sing Core French door lightweight properties shipping, transportation and installation costs are reduced.

Economical

Though used in high-end designs, Sing Core French Doors are competitively priced, and even though they are handcrafted in the USA, can still compete with inexpensive imports.

Click here for more information on Sing Core Doors

How to BuyMetal Composite Sing Core panels are true straight, light and strong.

To order Sing French Doors submit an order form either by email, info@singhome.com, or print and fax it to: 360.495.4585. We’ll provide a quote within one business day. If you have questions, please contact us.

Easy Ordering

All we need to know is the length, width, thickness and what you desire on the exterior, and your custom specialty panels are made to order. Getting a quote for your specialty product, is easy, thanks to our simple online order system.

Bulk Discounts

If you’re looking for a bargain price, remember, the more you order, the less expensive your total order will be per piece. Quantity and wholesale inquiries are encouraged. Feel free to contact us for more information. Click here for Closeout specials.

Fast turnaround: In you’re in a rush, only Sing Core can be custom made within 24 hours and is proudly manufactured for you in the USA.

Fast delivery: Any thickness and almost any length, less than 5 ft wide, can be made with in 48 hours if it is rush order.

SINGCORE French Doors are easy to order. You may choose from our stock panels or order custom sized panels. Our price is based on the length, width, thickness, and quantity. Submit a Work Order by fax or email, and we will give you a quote within one business day. If you have a tight budget, give us a call, we might have an alternative solution tailored to your needs.

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Door Blanks

Applications -> Building Components -> Doors -> Door Blanks

Yes, Sing Core does specialize in high-end, oversize, custom one-off doors that are fit for a King, adorning palaces and mansions around the world, but we make this technology available to homeowners and commercial applications by teaming up with local door and window manufacturers across the United States. Likely, we have a partner near you.

Door blanksSing Core provides patented standard Sing Core door blanks available to door manufacturers, wood workers, contractors and millworks for use in traditional construction projects. This makes the Sing Core technology available to the masses at affordable pricing, and helps to make and keep jobs in the USA, supporting more local economies, while making the world a better place.

Our local millwork partners can turn a standard-sized door blank into a one-of-a-kind work of art, that is not only beautiful, but let’s you enjoy all the benefits of Sing Core, like:

  • Lightweight
  • Eco-friendly
  • Durable
  • Stronger than steel
  • Insulated
  • Sound-deadening
  • 10 year true flat & structural guarantee
  • Less expensive to install
  • Less stress on hardware
  • Less maintenance

Metal Door BlanksOur wholesale door blanks are supplied to your discriminating door company for use in a wide variety of door applications. Depending on your ideas, limited only by your imagination, you can use this technology in nearly any style of door. Here are some examples of how your local door company might use this technology:

  • Entry doors
  • Bedroom doors
  • Metal doors
  • Pivot doors
  • Glass doors
  • Fire doors
  • Inside doors for homes
  • Dutch doors
  • French doors
  • Pre-hung doors
  • Carriage doors
  • Sliding doors
  • Bifold doors

ready-to-ship-eco-friendly-lightweight-sing-core-panelsAlthough the most popular doors in residential installations includes any wood species available, Sing Core door blanks are also available in almost any other material imaginable, including (but not limited to):

  • Concrete
  • Brick
  • Ceramic
  • Fiberglass
  • Aluminum
  • Stainless steel
  • Fire-resistant Magnesium Oxide (MgO) Board
  • Bullet-proof Kevlar
  • … and so much more

Basically, Sing Core door blanks are available in nearly any standard construction material, making the possibilities limited almost only by your imagination.

Sing Core is constantly on the look-out for better ways to serve the general populace, and aggressively seeking ways to allow others to enjoy the sustainable, eco-friendly benefits of this patented technology.

Please contact us, if you are interested in experiencing this advantage for yourself, and/or your community for a better life for all.

 

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Door Sliding Glass

Applications -> Building Components -> Doors -> Door Sliding Glass

Sliding Patio Doors & French Doors, Glass with Wood Frame

SINGCORE-The new generation of sliding door making is an alternative to the old stile and rail door which has dominated the market for the last 100 years.

 

torsion box, sandwich panel, honeycomb panel, lightweight panel

Patented Sing Core: We put a torsion box in the SIP panel to make it better. The other names for our panels include sandwich panel, honeycomb panel and lightweight panel.

The new technology developed and patented by inventor Peter Sing makes doors stronger, more lightweight, saves more energy and is more dimensional stable than any stile and rail door. Best of all it is more affordable due to the reduction in labor used to produce Sing Doors and that savings is passed down to you and your customers.

The entire glass cutout of the door is cut out of our solid Sing panel to create a seamless torsion box frame to replace the conventional stile and rail door, which is typically held together by dowels.

The new Sing torsion box door frame is labor saving, earth friendly, the best of all it makes for a long lasting sliding door lock.

Our door cores fill a need in the sliding glass door niche because our cores are not only lighter than standard solid wood, fiberglass and composite door cores but our cores are stronger providing a longer lasting door core with a structural guarantee of 10 years which is about 9 years longer than the standard guarantee out there.

Glass options include frosted glass or tempered glass for glass replacement.

It’s so easy to use Sing Panels to make beautiful doors of any size. Sing Door Panels have a ten year warranty for interior use. For external use, we offer marine grade plywood. If you need strength, lightweight, insulation, and true flatness, Sing has the answer!

How to Buy

 

Sing Door Panels are easy to order.  You may choose from our stock panels or order custom sized panels. Our price is based on the length, width, thickness, and quantity. Submit a Work Order by fax or email, and we will give you a quote within two business days.

Sing Door Products

Carriage Doors

Sliding/Pocket Doors

Interior

Exterior

Overhead

 

Get custom doors without the custom pricing!

Sing Honeycomb Panels are available at a fraction of the price of conventional sliding door panels, and require half the work. Sing Door Panels are insulated, lightweight, strong and more dimensionally stable than solid wood panels!

Choose Sing for all your Door Panels!  When using Sing Panels, you design your own door by adding the trim, paint, and hardware. Sing Door Panels are great for millwork shops and door builders. Special pricing is available to distributors and retailers.

The typical 1.5″ solid wood edging is adaquate for door hinges but add solid wood blocking to your door core for added hardware or door knob needs.

Order the typical flat panel door or add trim to the panel to achieve the raised panel look.

Skin Options

To see typical skin options click here.

How to Order

Stock Doors Available:

Sing Door Panels (4’ x 8’ or smaller) just fill out the order form.

Order Custom Sizes:

To order custom doors sizes, submit an order form. We’ll respond with a quote within two business days.

How to Install the Glass

 

 

SINGCORE sliding glass doors can do anything a traditional stile and rail door can and more. Making window glass replacement easy and convenient.

Glass inset doors even with dual or triple pane can be notorious for allowing in the cold or heat because the actual portion of the door isn’t insulated but with our patented Sing Core, you’ll know that the entire door is insulated.

Sing Core’s door panels are available as a single purchase or bulk ordering

7′ long and 30″ wide door that is able to be carried by 1 person, lighter in weight than similar doors made of solid wood but stronger and longer lasting

Whether you buy 1 or 1000 doors you can be sure they are made to the same quality and standard each and every time

Insulated Sing Honeycomb french door, ready assemble

Lightweight, insulative, true flat, high-strength, eco-friendly are just some of our doors’ qualities

With Sing Core you will have a stronger lighter weight door with excellent insulation qualities. Door will stay true flat, built using torsion box technology.

 

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