Poly-Tex KOOL MART - Manual (Page 13)

IMPORTANT NOTE:
LUMBER SUCH AS 2 x 4's, 2 x 6's
OR 1" THICK PLYWOOD MUST BE USED
TO HELP CONCENTRATE WATER
TUBE WEIGHT OVER THE BENCH
FRAMES.
DIVERTING FROM THIS
PROCEDURE CAN CAUSE
SERIOUS DAMAGE TO YOUR
STRUCTURE UNDER WINDY
CONDITIONS.