PetSafe Extreme Weather Sliding Glass Pet DOOR, Medium

The PetSafe Extreme Weather Sliding Glass Pet Door is our most energy-efficient pet door option for sliding glass doors. The dual-paned glass, weather stripping and 3 flexible flaps with a magnetic seal help keep the hot or cold weather out and the air conditioning or heat in for increased energy-efficiency. Available in 2 sizes, this door is a great option if you live in an apartment or rental home because it can be easily installed without cutting or drilling into your sliding glass door frame.