Description LARGE DOOR STOPS: Each wedge-shaped door stopper measures 12.2 (L) X 5.6 (W) X 3 (H) cm and is best suited for door openings between 1 and 2.8 cm. These rubber door stoppers are perfect for indoor and outdoor use in the home/office/cottage/garage/school and hospital. WIDE APPLICATIONS: These sturdy, non-slip door stoppers are suitable for wooden, glass and steel doors and work well on floors such as hardwood, carpet, concrete, tile, linoleum, stone, asphalt and ceramic, providing superior grip. STRONG: These rubber door stoppers rely on a sloped design to prevent doors from closing on their own. They fit under most door gaps when double-stacked, and can withstand daily use without cracking. Reinforced edge around the safety door stoppers and the improved hollow design that allows for double-stacking make it difficult for these door wedges to tip over. ANTI-SLIP: Protect your home or office wall with these durable, heavy-duty door stops that won't slip or damage even on industrial doors. Keep your children and babies safe from slamming doors. Pets won't be unable to return home because the door is closed by the wind.