FREEDOM AND INDEPENDENCE: Give your cats and dogs freedom to go in and out without your help, arrangement for potty breaks or play time by themselves. DIMENSION AND TELESCOPING WIDTH: The telescoping tunnel accommodates walls that are 4 3/4 - 7 1/4 in thick. Flap Opening:5 1/4 W x 8 1/8 H. Frame: 9 1/4 W x 13 1/8 H. Cutout in wall: 6 3/4 W x 10 H. EASY INSTALLATION: This pet door easily installed in all types of interior and exterior walls; cut-out template and step-by-step instructions are included, simple to follow instructions walk you through the install. DURABLE, SAFE :This Pet Door frame is made of metal laser welding process and high-quality steel aluminum alloy oxidation to ensure durability,security and thermal insulation. ENERGY-SAVING: The double-flap provides weatherproofing and energy efficiency and helps protect against extreme weather, air drafts. TAILORED FOR YOUR PET: Flap opening is 5 1/4 W x 8 1/8 H and is designed for pets up to 12 pounds.

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