M-D door bottom, dual, l-shape, m-d, 1-3/4 in width, 36 in length, PVC, White, includes: fins, for steel doors. 36-Inch L-shaped rigid vinyl door bottom with flexible vinyl fins. Screws included. For use with saddle threshold. Fits 1-3/4-inch doors. Designed to be used with smooth top thresholds to seal out drafts from the bottom of your door. Helps make your home more comfortable. From the Manufacturer 36-Inch L-Shaped Rigid Vinyl Door Bottom with flexible vinyl fins. Screws Included. For Use with Saddle Threshold. Fits 1-3/4-Inch Doors. Designed to be used with smooth top thresholds to seal out drafts from the bottom of your door. Helps make your home more comfortable