Easy to install The complete instructions included, they allow you to easily install it in windows, doors, wardrobes, etc. Curated and high quality design The transparent flap allows the animal to see through the door.The external screen is waterproof.The brush strip reduces the noise of the closure of the door. 4 -way closure four independent models to be blocked only with swivel sworn switches, only internal, internal and external, and completely blocked, easy control of the entrance and exit of yourspet professional cat suitable for cats weighing less than 15 pounds and life circumference of less than 15.5 '