- Silent and Mechanical Operation: Our door stoppers feature a silicone mute design with no magnetic or locking function, ensuring quiet operation. The second stop is windproof and includes a locking mechanism for added security. - Easy Installation: No drilling required. Simply measure your door's opening and closing angle to identify the best suction position. The main body and base should be installed vertically. Fits gaps within 2.5cm. Installation options include 3M glue or screws for dual use. - Versatile Fit: Sold individually, these large door stoppers are compatible with any door that has a clearance of up to 2.5cm. Ideal for use in offices, homes, schools, and more, they effectively prevent doors from closing unexpectedly. - Universal Floor Compatibility: Designed to work on all types of flooring, including carpet, hardwood, laminate, tile, linoleum, concrete, and area rugs. The rubber grips ensure a secure hold on various surfaces. - Non-Slip Design: The bottom features suction cups that provide a strong grip, preventing movement. The angled surface keeps doors from closing on their own, eliminating concerns about slamming in windy conditions. Perfect for maintaining a quiet environment for working professionals, sleeping infants, and active children. This product is a practical solution for anyone looking to enhance door safety and functionality in various settings.