4 Switch Modes: Four independent models to lock with switches-swing out only, in only, both in and out, and fully locked, easy control of your pet's in and out Applications: Outer Size is about 9.3" x 9.8" x 2.16"(W x H X D), Inner size:7.08" x 7.48"(W x H), Cut-Out Size: 7.7" x 8.3" (W x H), suitable for installation on doors and thin walls, suitable for cat lighter than 17.64 lb and waist circumference shorter than 23.62" Easy To Install: Complete instructions included, make you easily install in windows, doors, cupboards etc Thoughtful Design: Transparent flap let pet see through the door. Exterior screen is for water resistant. Brush strip reduces noise from the door closing Assured Quality: Made of ABS plastic, weather-resistant, the surface is smooth and durable Package Includes of Large Car Door : 1 X Large Cat flap door 8 X Screws 8 X Screw caps Note: There are total 8pcs screws, 4pcs used on the front and the rest used on back. Due to manual measurement, please allow slight differences on size. There might have slight color differences due to different displays.