This is a cat door with a passageway, suitable for walls with a thickness of 11.5 to 20 cm, such as exterior walls and room partitions. Color: White Material: PVC, ABS resin Passageway: 2-piece snap-in design Installation thickness: Compatible with 11.5cm to 20cm Flange outer dimensions: W270 x H310 Hole cutout dimensions: W228 x H276 Cat door size: 14.5cm square Suitable for: Average-sized cats weighing 6kg or less Installation requires through-hole cutting, waterproof caulking, etc. Accessories: Mounting screws, template, instruction manual, no eaves