• Easy installation: suitable for wooden, PVC, metal doors, and brick walls. Not suitable for glass installation. • Locking system: includes a closing panel to lock the door when necessary. • Dimensions: 23.60 cm x 19.80 cm; maximum shoulder width 14.70 cm. Ideal for cats, kittens, and small dogs up to 7 kg. • More freedom and movement: allows your pet to access selected areas and move freely. • Durable material: made of sturdy plastic with a rigid plastic flap. • Product content: 1 PetSafe Staywell pet door, 1 closing panel, mounting screws, installation guide, and manual cutting instructions. • Compatibility: can be installed on wooden doors, brick walls, PVC, uPVC, and metal supports. Tunnel extension available separately.