This Poly Double Stacker (Model 1607) is constructed of high density polyethylene (HDPE) and is used to hold a horizontal drum on the Eagle Horizontal Drum Stacking System. The Eagle Horizontal Drum Stacking System Drum Containment System is used in combination with Eagle's spill containment platforms. All components (Model 1605 Cradle, 1606 Single Stacker, 1607 Double Stacker, 1608 Shelf, 1645 4 Drum Pallet, 1632 Drum Modular Platform)are 100 percent HDPE and are designed to lock into spill grating for stable drum storage and are ideal for chemical storage and dispensing. The shelf (Model 1608) attaches easily and allows for filling multiple containers at once.