We ordered the 5 1/2"
We ordered the 5 1/2" foundation to go with our new Avocado Mattress. While the box was heavy (I am 75 years old with back issues, so I used a two-wheel dolly to get it into the house. Assembly instructions were clear and simple. Adding the slats after I put it in place on the bed frame made it easy to lift and move into the bedroom. Quality was great, it was easy to assemble, and if a 75-year old with back issues can do it, anyone can!