4 Closing Types - The cat cage has 4 locking modes: inward open, outward open, two way open, locked. You no longer need to open the door when your pet wants to enter the room. Simplify your life and free your pet at home Easy to install - this pet cover is suitable for brick walls, wooden doors, PVC doors and aluminum doors. metal and can be integrated into doors and walls from 2 to 5 cm thick. Detailed installation instructions and illustrated instructions are included. If you have any questions during installation, please feel free to contact us. Pet mosquito net support - size S: outer frame 19.7*19*2cm, inner frame 17 *16*2cm; M: outer frame 19.7*19*5.3cm; Inner frame 17*16*5cm; L: outer frame 25*23.5*5.3cm; Inner frame 21*19.5*5cm; XL: outer frame 28*25*5.3cm; Inner frame 24*21*5cm. Pet weight range: less than 12.5 kg Very quiet - thanks to special seals and magnetic locks, this revolving door is extremely quiet and offers optimal protection against drafts . The brush strip eliminates noise when opening and closing the door. Suitable for most cats and puppies (Pomeranian, Yorkshire Terrier, Peking, Dachshund, etc.). Designed with a mosquito net - the transparent flaps are made of high strength fiberglass which protects against UV rays, good transparency that prevents pets from grabbing and biting, moisture-proof and wear-resistant.