PetSafe Freedom Aluminum Patio Panel Sliding Glass Dog and Cat Door PERFECT FOR RENTALS: Great for apartments or condos - take the door with you when you move ENERGY EFFICIENT: The tinted, flexible flap uses a magnetic closure to keep the flap in place and is lined with weather stripping to keep the outside heat or cold out of your home CONTROLLED ACCESS: The slide-in closing panel allows you to control your pet's access to the outdoors STRONG ALUMINUM FRAME: Strong aluminum frame with tempered glass is made to withstand heavy use PRODUCT SUPPORT: PetSafe brand's US-based Customer Care experts will be glad to help; call Monday through Saturday at 1-800-845-3274 EXPERIENCE: PetSafe brand has been an industry leading US manufacturer of pet behavior, containment and lifestyle products since 1991, helping millions of people and pets each year