Storex Industries STX61418U01C Stackable Literature Sorter Gray Its 15, 000-sheet capacity gives you a versatile solution to organize your large-scale document storage requirements. Heavy-duty plastic construction will not sag or bow and outlasts cardboard alternatives for long-lasting use for years to come. If 30 compartments aren't enough, its stackable design lets you add extra sorters to create up to a 72-compartment unit. Each compartment measures 9-1/2 x 12 and holds up to 5 lb. Specifications Color: Gray Material: Plastic Capacity: 15000 x Sheet Maximum Load Capacity: 150 lbs Total Number of Compartments: 30 Compartment Size: 9.50 x 12 Shape: Rectangle