[Extended and Customizable Fit] This large flap is especially suited for bigger dog houses or several dog entrances. The flexibility to cut and tailor it to specific dimensions ensures a perfect fit, simplifying your pet's access while enhancing the esthetic of their space. [Simple DIY Installation]Equipped with everything you need to set it up; this kit includes stainless steel nails for secure fitting. The vinyl plastic flap can be easily tailored to your dog's door size, offering a straightforward, user-friendly installation that doesn't require professional help. [ High-Quality PVC Material]Constructed from superior PVC that's not only waterproof but also ATC certified and boasts grade flame retardance. This robust material ensures and reliability, keeping the dog door functional and safe throughout the seasons. [Weatherproof Design for Comfort]Capable of withstanding extreme temperatures ranging from -58F to 122F. These flaps are designed to block out winter chills and summer heat, providing a comfortable passing for your pet year-round. They help maintain the interior climate, saving energy and providing comfort. [Preparation before Use]Shipped in a rolled-up form to maintain integrity during transit. For optimal use, flatten the replacement flap before installation. A slight odor may be noticeable initially; however, this can be easily remedied by airing the flap in sunlight for a few days prior to installation. Colour: light green Material: PVC : A Package Contents: 1*Dog Door Flaps (There is a slight color difference due to lighting problems, which does not affect use) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.