Screws,Peg Board,Melamine

shelves are 18x38 each. thats all i can give you as you wont know the height of your rack till you begin to build it. but guessing on a 5 tub rack you looking at a 35" tall rack. just cut the 5 shelves out then cut sides thats say 18x40 and assemble it. If the 40 is too long then cut it down to make it better.