4-mode cat door with lock provides controlled access for your cat while you stay in control. The red and green switches with tabs let you adjust four operating modes as needed. Easy to install - Includes detailed installation steps and 10 screws with caps for quick setup. - Suitable for doors, cupboards, panels and walls; install in interior doors for rooms, closets, or other spaces. Size and application - Outer size: 9.8 x 11 x 2.15 in (W x H x D) - Inner size: 7.9 x 8.7 in (W x H) - Cut-out size: 8.3 x 9.5 in (W x H) - Fit on doors and thin walls; supports cats lighter than 27.54 lb and with waist circumference under 24.8 in High quality and weather resistance - Made of ABS material, weather-resistant, with a smooth, durable surface - Fixed groove with snap tabs for a weather-proof brush strip; the brush strip is easy to reinsert if detached - The design helps reduce noise and blocks rain, wind, and pests such as mosquitoes Use scenarios - Install in a main interior door to allow your cat to move between living spaces while you manage access with the lock modes - Place in a door, cupboard, panel, or thin wall to create a convenient pet entry point where you want controlled access - Ideal for apartments or homes with limited space, providing a secure, weather-resistant cat door that works across multiple interior applications