High quality material This cat flap is made of PC plastic that is waterproof and weatherproof. The surface is smooth and durable for long service life. Quality control ensures reliable performance you can trust. Four locking options The flap offers four closing modes: open inward, open outward, open both directions, and closed. This gives you precise control over pet access and helps you keep the door secure when needed. Thoughtful design for cats Designed specifically for cats, with a glass decoration style and a transparent window design that blends with glass doors and window screens. It works well with sliding window screens and glass panels. Suitable for small pets Overall frame size: 11.8 x 11.8 x 1.6 inches. The flap size is 18.5 x 20.5 cm (7.25 x 8 inches). Fits all cat breeds and some small dogs up to 6 kg (13 lb). Use scenarios - Home with a glass door or balcony door: pets can go in and out freely while you control access with the lock modes. - Apartments or shared spaces: lets your cat roam safely indoors while preventing unwanted entry by others. - Nighttime or away from home: switch to closed to restrict access and maintain security while you’re away.