Contractor for 28 years and could use a little better instructions. I figured it out but, i feel for the not so handy. Otherwise i like the design. My dog will appreciate the room too. I recommend this product. Wish courier would at least ring the door bell to let  us know its outside. On a rainy it snowy day this would of been ruined. We have a video doorbell but they would of had to walk 4 more feet to push the button