PetSafe Wall-Entry Aluminum Pet Door (Small) - $79.99

Let your pet conveniently enter and exit at will, wherever the location. Perfect for dog houses, outbuildings and kennels. Double-flap system insulates for maximum efficiency. Aluminum frame with telescoping plastic tunnel for installation flexibility. Fits walls 4-3/4 to 7-1/4 thick. Small shown. Sizes: Small (9-3/4W x 13-1/2H frame, 5W x 7H flap) Medium (12-3/4W x 17-1/2H frame, 8W x 11H flap) Large (14-3/4W x 21-1/2H frame, 10W x 15H flap) Size: Small. - $79.99