PetSafe Medium Extreme Weather White Pet Door for pets weighing up to 40 lbs. This 3 flap pet door offers 3.5 times more energy efficiency than a single flap door, ensuring the best protection from the elements. Adjustable and flexible, it features tinted flaps and a paintable plastic frame with a snap-on closing panel for added convenience. Suitable for installation in panel doors, wood, storm, PVC, and metal doors ranging from 1-5/8" to 2-1/4", as well as interior and exterior walls with cut-out measurements of 9-3/8" x 14". Backed by a 1-year limited warranty.