Features: brand new and high quality Transparent Cats Door for Glass Door: The flap of Cats door for door is transparent, you could see the movement of your pets clearly and the clear design would give all glass doors and for windows up to 1.2'' a perfet fit. 4 Locking Methods :You can adjust the lock status of the pet doors for cats according to the travel habits of the pet. The sliding glass pet door have four states: open, locked, in-only and out-only. Durable Material & UV-Resistant Design:The sturdy flap of the indoor Cats door is made from high-quality ABS. Our window pet door can effectively reflect ultraviolet rays and maintain the indoor temperature. Silent Action and Dust-proof Design:The magnetic closure keeps the Cats doors for interior doors closed to remain quiet and not disturb the pet owner, and nylon brushes reduce of the Cats flap door the sound of door work and reduce dust. Easy to Install:Our small dog door would fits most doors up to 1.2'' except tempered glass, refer to the seller's pet door installation method, you only need few tools to complete the installation. Specifications: Material:PVC Color:Transparent Size: Approx. 30x30x4 for cm/11.81x11.81x1.57 inches（External Dimensions） Size: Approx. 18.5x20 for cm/7.28x7.87 inches（Inner Dimensions） Size: Approx. 26.7 for cm/10.51 inches（Suggested Opening Size） Package Includes: 1 x Pet Door note: 1.Please allow 0-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3.Other parts are not included. Thanks for your understanding.