Push stackers from Presto Lifts can be configured with a manual or powered lift. The company offers M-Series units that have either a foot or hand-actuated pump to raise and lower loads with no electrical power. B-Series models utilize onboard battery power for lifting and lowering. M-Series manual lift models are available in 1,000 or 2,000 lbs capacities with up to an 18” load center and lifting heights to 76”. B-Series powered lift units can be specified with 1,000, 1,500, or 2,000 lbs capacities at a 15” load center with lifting heights to 78”. All units are equipped with a foot-operated floor lock, a safety shield on the mast, and high-impact, floor-saving phenolic wheels, and casters.