PetSafe Extreme Weather Energy Efficient Pet Door White Medium

Provides 3.5 times more energy efficiency than a traditional single flap pet door to help keep out the weather and draftsProvides 3.5 times more energy efficiency than a traditional single flap pet door to help keep out the weather and draftsSnap-on closing panel included to keep pet from using pet door; Use a second closing panel (sold separately) on the outside for an additional layer of weather protectionPaintable plastic frame to match your door color and dcorFor installation in people doors 1 5/8 inch to 2 1/4 inch thick; Detailed installation instructions and cutting template includedFor pets 40 lbs. or less; flap opening size is 8 1/8 inch W x 12 1/4 inch H