Mine is 14'. Two layers of 5/8", first layer has the seam in the middle (2 x 7'), top has one 8' piece centered with two 3' panels on the ends. On top of that, I have the white coated 1/8"? tempered hard board, seam again in the middle. It all sits on a 10' x 4' x 36" frame which is on casters.
Allen G. Wiesner KR-2S3/TD S/N 1118 65 Franklin Street Ansonia, CT 06401-1240 (203) 732-0508 flash...@usadatanet.net