Allows large cats or small dogs (up to 360mm shoulder height) to come and go freely. Features a secure four-way-locking mechanism for full control over your pet's access (in/out, in only, out only, or locked). Designed for easy fitting to internal doors, UPVC/metal panels, walls, and wood up to 50mm thick. The transparent, draught-proof, and weather-proof design helps maintain a warmer home environment. Suitable for very large cats or small dogs like Yorkshire Terriers, Pekingese, and Dachshunds.