Door StoppersRubber door stoppers make just the right contact with residential floors to safely wedge into place beneath interior and exterior doors for a secure grip.These heavy rubber jam with a unique design provides optimum friction to keep the door deadbolt.All Our door stoppers rely on a sloped design to keep doors from closing on their own. They fit under most door gaps if you double them back to back, and will withstand daily use without cracking apart.FLEXIBLEThese door stoppers allow you to move freely in between rooms of your home, school or office, without having to open and close your doors every single time.WORKS WITH ANY DOOR ANY FLOORThey work well on floors like hardwood, carpet, concrete, tile, linoleum, stone, asphalt and ceramic providing superior clench.SLOPED DESIGNA clear-cut reinforced skirting around the door stoppers and the enhanced hollow design which enables double stacking makes it hard for these wedges to topple.