Pet Transparent Window Clear Perspex Acrylic Fence Window for dog and Universal Clear View Acrylic Pet Window for Cats Enhance Your Fence Amazon.com : Acrylic Dome Pet Window, Set of 2, 12.4" Clear View Peek Acrylic Dome Dog Window for Fence to View Outside The Warehouse Universal Clear View Acrylic Pet Window for Cats Enhance Your Fence. Size: 31. 5*31. 5*12. 5CM 1: When the dog is alone, the dog will feel lonely and anxious, and can open the field through the small fence window, causing the dog to have more fun. Reduce the chance of roaring and prevent disturbing people. It can also increase the interaction between the dog and the owner! 2: Modern and unique small fence window installation is very simple and convenient, acrylic material, the product is not easy to break. The quality is firm. Suitable for dogs of any size.