In your choice of available size - Aluminum frame with polyolefin flap - Patented magnetic design helps flap resist winds up to 50 mph - Double layer energy efficient design - Choose from available finish options - For installation in doors 0.5-1.75 in. thick - Made in the USA. Your lovable pet, comes out a winner with the Endura Flap Pet Doors Single Flap Pet Doors for Doors. Constructed with a sturdy aluminum frame and flexible, safe polyolefin flap, this pet door allows easy coming and going for your dog, cat, or other domesticated animal. In addition to having a happy pet, with the flap closed you'll also reduce air conditioning and heat loss, saving you on costly energy bills. A locking cover is included for home security. Size: 6W x 11H in.. Color: Black - 03PP06 1B.