Specification:Type: Locking flap doorMaterial: plastic materialDog size: Cats or small dogs under 17.6 lbsColor: WhiteSuitable for: any wall or door up to 20mm thickApplication: Glass doors and windows， plastic storage boxes， screen doors， rolling doors， tin doors， acrylic door panels， etc.

Size: L thin model: outer frame 25*23.5*2cm inner frame 21*19.5*2cmXL thin model: outer frame 28*25*2cm inner frame 24*21*2cm

Features:1. Give your cat a chance to come and go freely， this cat stopper has a 4-way locking system.2. Easy-to-understand instructions for use. Slide the lock at the bottom of the flap to set the door as follows:(1). The flap locks from both sides.(2). The flap is fully open and the cat can enter and exit at will.(3). The cat can only enter from the outside and cannot go out again.(4). The cat can go out， but cannot go back in (to prevent other cats from entering as well).3. Simply press the latch to lock the door and lift it to unlock it.4. Perfect for home and cottage use， quality， with Drought-proof brush edge.

Package including:1 x Cat and dog lockable flap door1 set of accessories

• 4-Way Locking： The cat door with lock have 4 switch modes， the pet doors for cats could be adjusted by the red and green switches with tabs and can be set to open， in-only， out-only， or fully locked， and easily adjustable making it easy to keep your pets in or out
• Easy to Install: Complete instructions included， making you easily install in windows， doors， cupboards， etc. The exterior screen is waterproof. The brush strip reduces noise from the door closing
• Pet Door Size: Small size: outer size: 7.5 x 7.8 x 2 inches (W x H x D); inner size: 6.1 x 6.3 inches (W x H); cut-out size: 7.5" x 7.8" inches (W x H); fits cats up to 16 lbs， suitable for any wall or door up to 50 mm thick.
• Safe&Thoughtful: The cat door has a transparent cat flap that the cat can see through. The pet doors for cats have a silent brush that can reduce the noise from the door closing. 4-way locking of the big cat door meets the cat's daily needs. The cat flap door with a magnet that let the flap can be quickly reset when the cat passes.
• Thoughtful Design And High Quality: Transparent flap let pet see through the door. The exterior screen is waterproof. The brush strip reduces noise from the door closing. Made of ABS plastic， weather-resistant， the surface is smooth and durable