D2865 Steel Door with Louvers Door Type 2 Lock Type Cylindrical Material 18 -gauge steel Thermal Insulation U-Factor 0.41 Door Opening Height 80 in Door Opening Width 36 in Window Height 60 in Window Width 24 in Thickness 1-3/4 in Includes 24 x 60 in Louvers 4-7/8 in 35-1/8 in 65-3/8 in 38-3/4 in