Pet Door for Wall Upgrade 2.0 with Secure Aluminum Lock, Steel Frame & Telescoping Tunnel, Double Silicone Flaps Dog Doggy Door and Cat Door for All Pets, Strong & Durable(Pets Up to 40 Lb) -Medium

TBCPET pet door size choose: S for dogs under 12 pounds, M for under 40 pounds, L for under 100 pounds, and XL for under 220 pounds. Please refer to the picture for measurement guidance. If unsure, contact us.

Durable Steel Frame: Our pet door features a sturdy steel frame that crafted using a metal laser welding process and high-quality steel aluminum alloy oxidation to ensure durability, security, and thermal insulation.

Easy Installation: Installing this pet door in your interior and exterior wall is a breeze with our step-by-step instructions and cut-out template, hardware.The telescoping tunnel allows for adjustable depth to accommodate different wall thicknesses.

Energy-Efficient: The double-flap design offers weatherproofing and energy efficiency, helping to shield against extreme weather conditions and drafts. Made from food-grade silicone, chew-resistant and safe, and free from Mosquitoes and Other Small Animal Intrusion.

Secure Lock: Ensure home security, control pet access, close the passage at night, and prevent external factors from entering.

TBCPET After-sales Guarantee: Customer satisfaction is our pride. We are committed to providing customers with high-quality products and excellent after-sales service. Your pet will adore this door.