Sizes - Aluminium Pet Doors David July 15, 2019 02:46 Updated Our Aluminium Pet Doors come in 3 sizes (See chart below). Related articles Aluminium Pet Door - Dimensions Installation behind your fixed glass panel (video). Sizes - Patio Pet Doors Do you install pet doors into walls? Is the flap weather and bug proof? Comments 0 comments Please sign in to leave a comment.