DMI Folding Bed Board, 3/4inH x 30inW x 60inD, Brown

If your twin-size mattress is too soft or sagging, you can easily make it firmer with this bed board. Simply unfold the board and slide it between the mattress and box spring to add more support to your bed. Adds firmness to a too-soft or sagging twin-size mattress. Slides between the mattress and box spring for quick and easy setup. Hardboard construction ensures durability. Folding design makes the board easy to carry and store when not in use. Folds into 4 equal sections to measure 15in x 30in for compact storage.