Conforms to uneven floors Seals against wind, rain, debris, pests, and insects 1/4" Single "T" long wearing flexible vinyl PVC bottom seal. Will not split, crack or shatter under load and remains flexible to -30(°) F. Reduces the moisture level of the garage interior and energy loss year round. 10 foot length - 1/4" T Shaped Garage Door Bottom Seal - 2 3/4" Wide. Two 1/4" T-shaped ends that slide into your metal retainer form a U shape when installed. 2 3/4" wide Garage Door Bottom Seal with 1/4" T-shaped ends fits standard bottom retainers. Please look at the pictures to compare it to yours. Select the width of your door above. All weatherstrip comes with an additional 2-3 inches in length. Determine what you need based on what is currently on your door. Weather strip varies within door models, so there is not one specific type that works with each model. Remove a portion of your existing seal from the bottom of your door to see the size and shape of the ends going into the track. Compatible with commercial and residential sectional garage doors up to 2" thick using a 2 3/4 " wide, 1/4" T-shaped channel weather seal. Models: Thermowayne 38, TW38, 8300Brands: Amarr, Clopay, CHI, Midland, North Central, Garaga, Overhead Door, Ideal, Raynor, Martin, Ankmar, Genie, and some Wayne Dalton models (8500, TS150, TS200, 5155, 5150, 5255, 5200, 2411, 2415, 216, 220). Please examine your door for compatibility prior to purchasing.