PetSafe Freedom Pet Door - Aluminum Medium

This door gives your pet all the independence he needs. Easy to install, the solid aluminum frame has reinforced corners for heavy use or for multiple pet homes. The flexible, soft flap is tinted and adjustable. A magnetic flap closure and weather stripping along the sides of the flap opening form a weather-resistant seal. A closing panel is included for improved weather-resistance or to control your pet's access to the pet door. It fits most doors (1-5cm thick) and is great for pets up to 40lbs. The flap opening is approximately 21cm x 31cm.