Door Frame Weatherstrip Insert Type Brush Insert Material Nylon Insert Color Gray Insert Size 3/8 in Flange Material Aluminum Flange Color Silver Flange Finish Mill Flange Height 1/4 in Flange Width 1 in Flange Thickness 5/16 in Overall Length 4 ft Overall Width 1 in Stays Flexible to -40 Degrees F Projection 5/16 in Mounting Type Surface Max Door Gap 3/8 in Fire Rated 3 hr For Use With 48 in W Doors Includes 45 Degrees Angle Brush Hardware Included