Our 18 Inch S.R. Smith Diving Board Mounting Kits include aluminum butt plates 16 1/2 inches long and 2 inches wide, rubber pads, bottom plate, and set of carriage bolts. Two square 9/16 × 9/16 inch holes on center distance of 12 inches. Mounting kit should be replaced whenever bolts or pad show signs of wear or rusting, or the board chatters or vibrates during use.
Use Commercial Grade 18 inch Kit for 10 and 12 foot Diving Boards.