Whitecap Inboard/Outboard Poly Swim Platform Kit This Whitecap poly swim platform is injection molded and designed for use with boats with either Inboard or Outboard motors. This kit includes all needed hardware for assembly and is UV treated for longevity in marine environments. Features: 304 Stainless Steel Hardware Assembly Required UV Treated Specifications: 18″ Wide 15″ Deep 3/4″ Thick