I bought 3 sheets of foam insulation 4'x8'. cut one in half length wise. taped 1/2 to one full size board so it measured 6'x8'. The other I cut both pieces (the 2'x8' & 4'x8') down to 6' tall and then taped them together with duct tape. I don't attach mine to the wall because I like to use both sides since I am usually working on several projects at once. Also, I can move them into the bedroom when I have a lot of company to get them out of the way.