Dayton Superior A-22 Spreader Cleats are used to form footers or grade beams up to 32" high. On panels up to 24" high the cleats are spaced at 32" maximum center to center spacing. For panels over 24", and up to 32", the cleats should be spaced at 24" maximum center to center spacing. Safe Working Load is 750 lbs. which provides a factor of safety of approximately 2 to 1. Two versions of the spreader cleat are available. The stamped metal cleat is available for 6" and 8" wall thicknesses with 3/4" or 1-1/8" lumber ends. The other spreader cleat version utilizes two lumber ends attached with a wire strut. This version is available for wall thicknesses over 5" with 3/4", 1-1/8", 1-5/8" and 2-1/4" lumber ends.