Extreme Weather Pet Door, Small

Small, extreme weather pet door, for pets 1 to 15 lb, energy efficient choice, 3 flap extreme weather system offers best protection from elements, energy efficiency is 3.5 times more than a single flap pet door, adjustable & flexible, tinted flaps paintable plastic frame with snap on closing panel, can be installed in panel doors, wood, storm, pvc & metal doors 1-5/8" to 2-1/4", interior & exterior walls, cut out measurements 6-3/8" x 10-1/8".