You can place your foundation on top of any bed frame, panel bed or floor surface that will properly support the weight of the mattress/foundation and the sleeper(s) on top. We highly recommend our Big Fig Bed Frame which is specially designed and suited to support our substantial Big Fig Sleep System. If you choose to use an alternate frame or bed, you’ll want to make sure it is built to support at least 1,310 lbs. (the total weight of a Big Fig Sleep System + 2 sleepers weighing a total of 1,100 lbs.).