insulating value od steel door

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The U-Factor, R-Value and K-Thermal Rating are measurements of thermal transmission through building products. U-Factor: Overall co-efficient of heat transmission passage through a built-up panel...
The five most common cores are honeycomb, polystyrene, polyurethane, steel stiffened, and temperature rise. Honeycomb core doors are used for interior and exterior openings where high thermal...
All doors are tested in accordance with ASTM C1363 and SDI 113:B18 Series (Steel Stiffeners)     U-Factor = 0.50     R-Value = 2.01B16 Series (Steel Sti...
Dezigner Trim – This unique and patented glass trim has been designed to closely simulate trims installed in wood doors and is factory: Supplied recessed into the door face, to provide a neat f...
Flush Mounted Steel Trim for Insulated glass – Designed for 1” thick insulated glass. Recessed into the surface of the door face Accommodates 1" (25 mm) thick glass. When installed, fastener...
Overlapping Steel Trim (also refer to as conventional steel trim) – This trim is the typical glass trim supplied by most hollow metal manufacturers. Surface mounted on the door face. Accommo...
Flush Mounted Steel Trim – This trim is similar to Overlapping Steel Trim but is factory supplied recessed into the door face and is available for 1/4” glass. Glazing stops are screw attached, fast...
 Basic glass trim details: