This was very easy to assemble. Loved the hint about putting dish soap on the pegs to make them easier to push in place. It took a couple of days for my senior Great Dane cross to get comfortable using this to access the back of our Subaru, but now he is a pro. So much better than struggling to jump in, or hurting himself jumping back down. The stairs are easy for me to pick up and rest securely against the bumper of the car for use. No problem with supporting my 100 pound dog. Very happy with this purchase.