Sofa Cushion Supports

Support boards for a standard three-seat sofa, 58 to 67 inches across the inside of the arms. Four depths: 19.7, 23, 25 and 27 inches, so deeper seats are covered. The board goes on the bare deck under the cushions, so nothing is attached to the frame and nothing shows once the cushions are back.

Measure with the cushions off. Wider than 67 inches is our long sofa board, narrower than 58 inches is the loveseat board. If your numbers fall between two sizes, take the smaller one.