Clopay® Introduces 3” Three-Layer Polyurethane Insulated Model 3730 Commercial Door for Maximum Durability and Energy Efficiency

May 20, 2014

Commercial Door Winter

Clopay is introducing a 3”polyurethane insulated upward acting sectional door with an R-value of 22.2. 

Ideal for use in in cold storage facilities and other temperature sensitive climates, Clopay’s Model 3730 three-layer steel “sandwich” door features environmentally safe, CFC- and HCFC-free polyurethane insulation foam injected between a 27 gauge exterior skin and a 28 gauge interior skin with a thermal break. The sections feature a continuous closed cell foam tape for additional weather resistance. 

The hardware on the doors includes a 4-3/4” EPDM rubber astragal, 14 gauge hinges, commercial 10-ball steel rollers, and 10,000 cycle torsion springs. 

The Model 3730 is available in either a factory-finished white or brown. Triple pane insulated windows are also offered in select sizes. 

Some door size restrictions apply. Visit /insulated-polyurethane-doors#divSpecs for details. BIM files and Specwizard® point and click specifications are available. 

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Mischel Schonberg



8585 Duke Blvd.

Mason, Ohio 45040


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