PetSafe® Alluminum Wall Entry Pet Door

Give your pets the freedom they deserve. Features include: Telescoping tunnel which allows for installation in walls 4 3/4" to 7 1/4" thick Double flap system insulates for energy efficiency Durable, white aluminum frame with dark trim Single locking cover fits on the inside or outside Easy do-it-yourself kit complete with instructions Lifetime limited warranty Small: Flap Opening: 5 1/4"W x 7 1/2"H; Cut Out : 6 3/8"W x 10 1/16"H; Outside/Overall: 9 1/4"W x 13"H