Long Bar Pigeon Hole Racks are ideal for mixed storage of long items. Five-hole high and three-hole wide frame allows for easy identification and retrieval of materials. Frames are held in place by separator and bracing bars. 7,700 lbs. capacity per frame. Extension bay kit consists of one frame and one set of cross braces for joining to the starter set. Capacity is 2,000 pounds per level or 7,700 per frame. Steel construction.