45 Hollow core flush door 2.61 1.65 1.82 … Note: All U-factors for exterior doors in the table are for doors with no glazing, … d Values for metal storm door are for any percent glass area. permitted for door thicknesses other than those specified.
Resolution: All doors are tested in accordance with ASTM C1363 and SDI 113: B18 Series (Steel Stiffeners) U- Factor = 0.50 R-Value = 2.01, Hollow Metal Entry Doors . Omaha Door & Window Co. specializes in commercial entry door replacement. Steel, stainless steel, wood, aluminum full glass, and special application doors are available. We can offer custom fabricating of doors and frames at our plant. … U factor : 0.31, R factor: 3.23 STC 26 (sound transmission)
