We want to make it as easy as possible. Nexel 5 Tier Silver Epoxy Wire Shelving Starter Unit 24″W x 21″D x 86″H. Nexel 5 Tier Wire Shelving Starter Unit 24″W x 18″D x 74″H. Nexel Nexelon 4 Tier Wire Shelving Unit 1 Heavy Duty Shelf 24″W x 18″D x 74″H.