*This sweep is used on fiberglass and steel doors Sweep measures 35 11/16" for a 36" door *The kerfs are notched back 1 1/4" from the edge of each side *There is a 7/8" distance between the two kerfs that insert into the door. *Newly re-designed rubber for long lasting life. Looking to replace your door sweep?... look no further… Improve the energy efficiency of your home with the use of one of our premium Sweeps. Masonite sweeps eliminate the gap between the door and threshold. By protecting your home against drafts, rain, snow, dust, pollen, insects and even noise you will easily maximize your energy savings. It is a very durable product, strong enough to withstand daily use all while providing a cleaner and safer home. Masonite Castlegate Beige Bulb Snap in Sweep *This sweep is used on fiberglass and steel doors *Sweep can be purchased in all sizes *The kerfs are notched back 1 1/4" from the edge of each side *There is a 7/8" distance between the two kerfs that insert into the door. *Newly re-designed rubber for long lasting life.