3-Flap Dog Door, Large Doggy Door, Doggie Door for Install in Interior and Exterior Doors or Wall, Insulation Layer, 2 Magnetic Flaps, Closing Panel, Never Rust, for Pet Up to 100lb (Large) Fresh XL large breed size fits

XL large breed size fits necks up to 31"

17 Pounds date first available September 14

The side length of the square steel tube is 19mm

7 inches in length and 5/8 inch in width

3-Flap Dog Door, Large Doggy Door, Doggie Door for Install in Interior and Exterior Doors or Wall, Insulation Layer, 2 Magnetic Flaps, Closing Panel, Never Rust, for Pet Up to 100lb (Large) Fresh XL large breed size fitsAbout this item 2 Quality Flap & 1 Insulated Flap: Petcoming Plastic dog door comes with 2 pieces of excellent quality magnetic flap that can fluently close after your pet passes through the dog door. Compared to other dog doors with only 1 piece flap, our 3 Flap is more windproof, waterproof and soundproof, preventing wind and rain, and isolating mosquitoes and insects. The 3 insulated flap can keep your house shielded from extreme weather conditions