The pet screen door is made from high quality materials and is durable. The overhead hinge design allows this monitor door to swing back and forth freely for added durability. The magnet will slow the door down and stop it in place after 4-6 oscillations. Suitable for most breeds of dogs, cats, rabbits, pet pigs, but not recommended especially for kittens and puppies because the door is too big. To prevent the door from hitting the dog’s hind legs, pay attention to the height of the door before installation, especially for puppies, short-legged dogs and cats. S’ Only applies to existing screen doors, porches, windows or other screened areas, not heavy wood, iron/aluminum doors, walls. It does not have a screen insert and installation requires cutting out the existing door screen between the legs. Use a flat head screwdriver to separate the door from the hammer to have 4 parts (frame, flap) and cut the 2 black tabs. You can push one into a hole in one side to lock the door to keep pets
