Simplify your life and save energy with the 15 in. x 20 in. Extra Large Ideal Pet Products Aluminum Frame Door. Give your very furry friend access to shelter day and night and get them in out of the heat, rain, and cold without any fuss or scratching at the door. Attractive, sturdy and dependable, Ideal Pet Aluminum Framed doors are simple to install with easy to understand instructions. Keep your pet safe and happy with an Ideal Door. Size: 18.05 In.