We got double bed size mattresses and put them straight on the floor (mattress and box spring...no rails) Then bought a head board and used it for the footboard (for the added height). We built rails along the front side, attaching them to the footboard and wall and bought mesh material and stapled it and glued it (all the added strength we could add :) ) Then nailed trim over the edges of the mesh material. There is a swinging gate entrance with 2 slide locks (one at top and bottom....so he can't reach one. He is standing at 37 inches...a little over 3 feet tall and the bed rails come to chest high. So this will contain him for a while. You have to use STURDY boards (not thin ones) and secure them well for all of the pulling, etc angels do.
