Weatherstrip Insert Type Hollow Bulb Insert Material Silicone Insert Color Black Insert Size 5/16 in Flange Material Aluminum Flange Color Gray Flange Finish Mill Flange Height 1 1/2 in Flange Width 1 1/2 in Flange Thickness 1/4 in Overall Length 36 in Overall Width 1 13/16 in Stays Flexible to 20 Degrees F Projection 1/4 in Mounting Type Fastened by Screws Max Door Gap 5/16 in Fire Rated 2 hr For Use With Doors Includes #8 Tek Screws Hardware Included