General Purpose Boxes 48 x 40 x 33 General Purpose Boxes Warehouse Supplies Online’s General Purpose Bulk Boxes are rated for 1,200-lb. load capacities. They collapse flat in seconds and stack for storage and return shipment – optimizing space…read more 48 x 40 x 46 General Purpose Boxes Warehouse Supplies Online’s General Purpose Bulk Boxes are rated for 1,200-lbs. load capacities. They collapse flat in seconds and stack for storage and return shipment optimizing space…read more