This Fillet Board Assembly comes with a removable vertical rod holder attachment. Simply attach the vertical rod holder tube and insert into a rod holder. (must be vertical with this design). The fillet board is made of 3/8" thick HPDE King Starboard, marine grade material. It is the finest material used to make fillet boards, The dimensions are 24" wide, 12" deep, and 3" tall. It is rugged and perfect for cleaning fish, barbeque prepartion, and cutting bait. Built by Boat Trix, it is excellent for the boater and fisherman alike.