OMG, where did you get these cat stairs,  I asked a friend  . . . they would work great for our doggies trying to get up on the high bed in our RV?  Do you think the stairs come in different sizes?  Given the information I looked up Wayfair on the computer.  I ended up buying the 4-level stairs which came securely packed in a strong box and took about 15 minutes to assemble.  What I like most is how sturdy and strong (covered in thick carpet), along with a solid base to prevent tip-overs for the dogs.  This in an A-1 product and I would not hesitate to encourage anyone reading this review to purchase these cat/dog stairs!