Description: This cat door is made of durable and sturdy plastic, designed do doors and windows with mesh to allow your pet to walk out or enter freely. Two-piece internal and external design, easy do install. The magnetic door will close automatically when the pet moves. Great for domestic cats and dogs to provide them with a comfortable environment. Features: The frame and inner plate are made of two internal and external parts, easy to assemble. It can be installed on screen doors, windows and other sheltered areas. Allow your pet to come and go freely and prevent mosquitoes from entering do room. Designed with a strong magnet, this door will automatically close when the animal comes out or enters. Easy do control, your pet will enter or exit without pressure. Technical data: Material: plastic; Color: White Size: XL XL: Approx. 45,5 x 35,5 x 1 cm / 17,91 x 13,98 x 0,39 inches (external dimensions) XL: Approx. 40 x 30 cm / 15,75 x 11,81 inches (internal dimension) Weight: approx. 317835g Package includes: 1 x animal doors; Installation instructions: 1. Cut off two inserts that control getting on and off. 2. Spread the cat door into two parts. 3. Attach the outer frame of the do mesh door and push the pin buckle into the sieve mesh. 4. Use do glass glue to firmly stick the buckle and screen mesh. 5. Cut the screen grid in the frame along with the frame. 6. The cut screen grid can be installed between the inner plate to prevent mosquitoes. 7. Hang the inner plate on the frame. 8. Attach another (internal) frame. End. Note: 1. 2. Please take the real one as standard. 3.