Our 20 Inch S.R. Smith Diving Board Mounting Kits include aluminum butt plates, 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 12 inch Kit for 14 and 16 foot Diving Boards.