Made from quality ABS and elastomer material, the Cat Door Holder Latch is strong, durable, and resistant to breaking, capable of withstanding the force of large dogs. Onepiece design allows your door to open approximately 5.6 inches. The Cat Door Latch for Cats easily hangs on most door handles, and its extralarge dimensions make it easy to use. Easy to mount. To install, fasten the Cat Door Latch to the door handle, secure the screw lock to the door handle, and snap the other end into the lock hole. Multiple purposes. Cats can enter and exit the room to find food. The Cat Door Stopper provides a comfortable space for your cat to come and go, and helps prevent large dogs from snatching food through the door. Use scenarios Flexible feeding access: lets your cat reach the food area while keeping large dogs from snatching food through the door. Everyday room movement: enables your cat to come and go with doors left ajar or partially open for ventilation and comfort. Largedog households: protects food and space by blocking dog access at the doorway while allowing the cat to pass through.