Bought this as didn’t want to cut into in our glass patio doors and was a lot cheaper to put in the conservatory wall , I paid £90 for installation it would have been £320-£370 to put in the glass so huge saving. The pet door itself looks great and I’m amazed at how draft proof it is. Our Jack Russell is slowly getting used to it and was a bit of a push with his nose at first as the magnets are strong but he does it with ease now. Bought the medium our dog is 7.5 inch wide and about 15inch high and fits through with ease. There are absolutely no wind noises or any gaps of daylight seen through it. The plastic cover is really good too , very pleased.