Item Type: Cat Flap Door Material: ABS Size: Outer Door Size: Approx. 28 x 25 x 5.5cm/11.0 x 10.0 x 2.0in Inner Door Size: Approx. 24 x 20.9cm/9.4 x 8.2in Package List 1 x Cat Flap Door 8 x Screws 8 x Nuts 1 x Double Sided Adhesive Tape 1 x English Manual 1. Please allow some errors due to manual measurement.2. Measure the cat's weight and waist line before placing an order. 1[Guard Food] Keep cat food at home and pet doors can keep dogs out. Cats can come back to eat and drink after free play. 2[Controllable Access] This pet flip door can control the direction of pet entry, universal model, suitable for most cat holes and dog holes. 3[Brush Bar Design] Cat flip door's brush bar help reduce noise and minimize pests such as rain, wind or mosquitoes. Easy installation. 4[Application Scenarios] Interior cat door is suitable for installation in interior doors, exterior doors, walls, windows, cabinets, glass, etc. 5[Safe and Reliable] Cat door is made of ABS material, which is weather resistant and has a glossy surface to keep cats from scratches.