1. Size and Applications Frame size 9.6' x 8' x 1.2' (H x W x D), door cover size, inner height 5.9', and inner door width 5.8'. With the cat tunnel, it can be easily installed in windows, doors, cabinets, panels, and thin walls, etc. 2. Safe and Thoughtful Design The transparent flap allows pets to see through the cat door. The 4way locking cat flap gives cats the freedom they love while maintaining control, with settings for 'Only In,' 'Only Out,' 'In Out,' and fully locked. 3. Made of weatherresistant ABS plastic, the surface is smooth and durable. It has a fixed groove with snap tabs for weatherproof brush strips that secure the brush bar. Even if the brush strip loosens, it can be easily reinserted into the fixed groove. This design significantly reduces noise and blocks raindrops, wind, or pests like mosquitoes. 4. Switch Mode The pet door can be set to 4 modes via the rotary switch: 'Only Out,' 'Only In,' 'In Out,' and fully locked, allowing you to easily monitor your pets. The cat door provides your cat with the freedom and independence to come and go as they please.