The largest environmentally friendly door manufacturer in USA

Let us know how big of a door you need and we will take your task to reach beyond your expectation.

Insulation of doors is the best way to reduce green house effect of the earth. Sing honeycomb doors are packed with insulation foam which is able to reach R-6.5 or more per inch.  With  patented Sing structure core, Sing doors have the following features.

   Lightweight -----less than 1/3 of the weight of Balsa wood

  High strength-----The least expensive lightweight high strength material ever invented.

Environmentally friendly-----The structure of Sing core is made of renewable fiber. It takes least energy and without any chemicals to produce. No other honeycomb material can make that claim.

Dimensionally stable ----Sing honeycomb core is more dimensionally stable than solid materials such as wood, metal, plastic, glass, concrete. It takes the core of solid material out replaces with Sing Honeycomb core to increase the strength , enhance the true flatness of the materiel and make it easy to work with----little to none of twist, shrinking and expansion as solid material.

90% of sing honeycomb core is made of air making it lightweight. It saves big in the shipping cost.

 Click here to read more about Sing Honeycomb Characteristics and Green Aspects

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