Hollow Metal Door U Factor

Reference table for u values u value is the coefficient of transmission i e the transmission of heat through the materials which compose the building s envelope or outer shell.
Hollow metal door u factor. U value has an inverse relationship to r value. All doors are tested in accordance with astm c1363 and sdi 113. The gray primer finish is suitable for painting. U factor 0 34 r value 2 9 including insulated door thermal break frame and threshold.
L18 series per astm c1363 r factor 2 64 u factor 38. Hollow metal door series core frame test methodology astm c1363 operable astm c518 calculated astm c1363 sealed in place u factor r value u factor r value u factor r value trio e polyurethane steel stiffened tb 0 29 3 4 0 09 11 0 n a n a. L18 series honeycomb u factor 0 56 r value 1 80. Independent testing laboratory certification for exterior door assemblies being tested in accordance with astm e283 to meet or exceed the following requirements.
Steel stiffened core for added strength and durability. Metal doors are more sanitary much easier to maintain and can withstand more abuse than wood or aluminum. Standard metal doors are 1 3 4 thick and are prime coat painted. Each line of metal doors and door frames exemplifies assa abloy s dedication to providing reliable and durable door opening solutions.
Polyurethane will have the best insulation value that is higher than both honeycomb and polystyrene. U factor the total or overall transmission of heat through a combination of materials assembly measured in btu s per hour per square foot of area for a difference in temperature of 1 f between the air on one side to the air on the other side. One of the lowest operable u factor in the industry for a steel stiffened door u factor 36 first steel stiffened hollow metal swinging door to qualify for greenguard gold. B16 series steel stiffeners u factor 0 53 r value 1 89.
What are the thermal factors for steelcraft door products. Assa abloy group brands have a broad offering of steel doors metal frames energy efficient solutions and aesthetic design options. This insulated core is a foam that is injected into the core and expands to fill all the available space within the cavity of the hollow metal door. Hollow metal doors are shown to have superior performance for strength and durability compared to the alternate materials.
Hollow metal doors and frames. For example a building with material with an r value of r 11 converts to an u value of 0 09 1 r or 1 11 0 09. B18 series steel stiffeners u factor 0 50 r value 2 01. One of the lowest operable u factor in the industry for a steel stiffened door u factor 36 first steel stiffened hollow metal swinging door to qualify for greenguard gold.
Air infiltration exterior openings. Door assembly operable u factor and r value ratings. Steel stiffened core for added strength and durability. Hurricane rated up to 100 psf 3 0 x 7 0 single and up to 70 psf 8 0 x 8 0 pairs.