Sandusky Lee CR3618 Gray Steel Boltless Rivet Particle Board Shelving, 72" Height x 36" Width x 18" Depth, 5 Shelves Standing five-shelf boltless unit with a steel frame and shelves made of particle board to support up to 800 lb. of evenly distributed loads Steel frame with gray powder coat finish resists chipping and corrosion Shelves are adjustable in 1-1/2" increments Open on all four sides to facilitate access to shelf contents from any angle Rivet lock design for boltless assembly, instructions included, rubber mallet (sold separately)recommended for assembly Industrial grade. 5 steel shelves and particle board storage unit. 1000 pound per shelf capacity. 5000 pound per unit capacity. 18"D x 36"W x 72"H.