I went to Home Depot and bought a piece of foam insulation, the kind they insulate houses with. I cut it down a bit, I think it was a 4' x 8' sheet, covered it with flannenl (wrapped the flannel around and pinned to the back.) I atached a board across the top, then put large eye hooks on the board, then put screws into the wall above the closet and attached wire to that, which ends in a loop. The eye hooks hook onto the wire loop. It can be taken down and storeed in the garage when not needed.