Perfect Glass Decoration - Clear design to fit it into your window, ideal for windows, sliding glass doors, glass windows; Ideal for all glass adaptations; your pets will immediately fall in love with the stylish cat flap. Simple And Comfortable - Two parts in the cat flap: the door brush dampens door noise, the inner rubber ring protects your cats injuries ; Silent movements do not frighten pets or disturb the owner. The cat is thus free to go in its litter box. Durable And Resistant - All doors are made of strong ABS plastic, weather resistant and of great comfort and ease of use - Robust construction in 100% UV resistant polycarbonate for a virtually unbreakable door.