Dog Door for Wall, Large Dog Door with Magnetic Double Flaps, Aluminum Frame, Telescoping Tunnel, Security Lock, Energy Efficient, Easy Installation

【DIMENSION AND TELESCOPING WIDTH】: The telescoping tunnel accommodates walls that are 3 7/8" - 8 1/4" in thickness. Flap Opening:11"W x 16 1/4"H. Frame: 14 3/8"W x 20 1/2"H
【SOLID ALUMINUM FRAME】: Unlike other doggie doors, The SURIBIRD dog door is made out of aluminum material, Including the telescopic tunnel. Do not worry about breaking and bitten easily. The tunnel will not rust, has no sharp edges, and is easy to clean
【SAVING ENERGY&SECURITY】: The double-flap and magnetic closure are designed for maximum energy efficiency and are weatherproof, which helps protect against bad weather, and air drafts. Perfect for hot and cold climates. It comes with an aluminum panel and 2 locking pins to keep your family safe
【FREEDOM FOR YOUR PET】: The SURIBIRD allows your pet to come and go as they please from any exterior wall, freeing up your time playing doorman to them. Make your pet door perfect for you, your pet, and your home
【EASY INSTALLATION】: This pet door is easily installed on most types of interior and exterior walls; Our simple-to-follow instructions walk you through an in-wall dog door installation of the pet doors. We've included tips and tricks for each step