Specification: Material: ABS Color: Brown / White Available Sizes: S M L Small: Overall size: 19.8*19*5.5cm/ H x W x T. Cut out size:15.8*15.5cm/ H x W. Perfect for cats and small animals. Medium: Overall size: 19.8*19*5.5cm/ H x W x T. Cut out size::16*15cm/ H x W. Perfect for cats and small animals. Large: Overall size: 25*23.4*5.5cm/ H x W x T. Cut out size:19.8*18.5cm/ H x W. Perfect for cats and small animals. Features: -Small and middle dog cat door with 4-way sliding lock. -For large cats and small dogs up to 14-inch shoulder height. -Smart switches for keeping the door closed & open or allowing the dogs to only go in or out. -It can be locked from both indoor and outdoor directions. -Flexible and safe pet door with weatherproof brush sealed flap. -Fashion design and easy to install. -Indoor and outdoor use, safe for your cat or dog.