The ideal door for extreme climates, the Extreme Weather Pet Door protects your home from extreme temperatures while giving your pet the freedom to come and go. This durable door with a 3-flap system delivers maximum energy efficiency that's 3.5 times higher than standard single-flap pet doors. For installation in doors 4.12cm to 5.71cm (1 5/8" to 2 1/4") thick; Detailed installation instructions and cutting template included. For pets 6.8 kg (15 lbs). or less, flap opening size is 13cm W x 21cm H (5 1/8" W x 8 1/4" H).   * Unique 3-flap system with a centre insulated flap is ideal for hot and cold climates or to help keep the warm and cool air inside your home * Provides 3.5 times more energy efficiency than a traditional single flap pet door to help keep out the weather and drafts * Snap-on closing panel included to keep pet from using pet door * Paintable plastic frame to match your door colour and décor * Easy do-it-yourself installation Pet Type Dogs, Cats, Small Animals Item Weight 1.1 Kg Product Dimensions 19 x 8.6 x 28 cm Item model number PPA19-15794 Colour Small Size S Weight 1.1 Kilograms Quantity 1 Batteries Required No