Tennsco Long Span Boltless Shelving provides heavy item storage capacities on larger shelves. Combine an interlocking keyhole design for fast, boltless installation without clips, gussets or sway bars and you've got a shelving system designed for your specific needs. Z-Line Long Span beams offer the ability to create shelving units up to 96" wide x 48" deep. Shelves are particle board and may be purchased with or without the particle board shelves.