23 in. L x 12 in. W Extra Large Single Flap for Doors with White Aluminum Frame

Endura Flap Pet Doors for Doors are manufactured to be flexible, safe and energy efficient in all climates. The transparent, dual-pane flap seals tightly against the outside weather using a patented system of magnets. When closed, the flap reduces air conditioning and heat loss. Each unit permanently installs into your solid core, hollow core, metal or storm door 1/2 in. to 1-3/4 in. thick. It includes a locking security panel. Comes with: Interior and exterior frame, locking cover, mounting hardware and installation instructions.”,”highlights”:[“One dual-layered flap with magnetic design for energy efficiency”,”Fits doors 1/2 in. to 1-3/4 in. thick, locking cover included”,”Aluminum frame available in four sizes and three colors”