DRUM STACKER SHELF The optional shelf (Model 1608) attaches easily, allows for filling of more than one container at a time, and can be used to catch drips.All components are 100% polyethylene for durable chemical resistance.MODEL 1608 SPECIFICATIONS: WEIGHT: 25 lbs. DIMENSIONS: 19"W x 23"L x 19"H LOAD CAPACITY: 100 lbs.