The PetSafe pet doors we carry can fit into doors, walls and patio panel doors and they come in a variety of colors to match your existing walls and doors. These pet doors are excellent to have because the entrance and exit panels are safe for any pet. You never have to be careful about your dog or cat injuring tender paws, ears or tails with these pet doors. Your pets can go outside and come back in whenever they need to, allowing them to get exercise outside and shelter from heat, cold or inclement weather. You will also benefit from their new found freedom when you do no longer have to stop what you are doing to open the door.