QUMY Pet Door for Cats and Dogs

🐱【PET DOOR SIZE 】XSmall Size: Outer Size: 7.4" x 7.8" x 1" ( W x H X D); Inner size: 5.7" x 6" ( W x H) ; Cut-Out Size: 6.3" x 6.7" (W x H); Fit Cats up to 16 lbs，Suitable for any wall or door that is up to 50mm thick;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: 6.3 x 6.7 inches (W x H); fits cats up to 16 lbs, suitable for any wall or door up to 50 mm thick. Medium Size: Outer Size 9.25" x 9.92" 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" Large size: outer size: 9.8" x 11" x 2.15" (W x H); inner size: 7.9" x 8.7" (W x H); cut-out size: 8.3" x 9.5" (W x H); fits cats up to 27.54 lb, suitable for any wall or door that is up to 50 mm thick.     🐱【4 WAY LOCKING 】The cat door with lock have 4 switch modes, the pet doors for cats could be adjusted by t