Non handed and fully reversible on the job site versadoor can be used for right or left hand opening swing in or out single or in pairs.
Exterior 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.
Factor the more effective the insulation of the material.
Any glazing area in exterior doors should be included with the appropriate glass type and analyzed as a window.
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.
Hollow metal doors are shown to have superior performance for strength and durability compared to the alternate materials.
National fenestration rating council types of doors.
One common type of exterior door has a steel skin with a polyurethane foam.
The range is from 0 00 2 00.
The lower the u value.
The insulation value is much higher than the honeycomb but lower than the polyurethane.
All u factors for exterior doors in the table are for doors with no glazing except for the storm doors which are in addition to the main exterior door.
Steel stiffened core for added strength and durability.
Flush design doors available in 20 18 or 16 gage steel.
Stc 26 sound transmission fire label rated for use in 20 minute through 3 hour fire ratings.
Hurricane rated up to 100 psf 3 0 x 7 0 single and up to 70 psf 8 0 x 8 0 pairs.
The lower the u factor the better the door keeps in heat.
Look for a low u factor.
Metal doors are more sanitary much easier to maintain and can withstand more abuse than wood or aluminum.
U value has an inverse relationship to r value.
Standard metal doors are 1 3 4 thick and are prime coat painted.
All doors are tested in accordance with astm c1363 and sdi 113.
L18 series per astm c1363 r factor 2 64 u factor 38.
The gray primer finish is suitable for painting.
B18 series steel stiffeners u factor 0 50 r value 2 01.
Interpolation and moderate extrapolation are f astm c236.
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 trio e polyurethane steel stiffened kerf 0 36 2 7 0 09 11 0 n a n a.
