The EcoPlus® O2 Commercial Pump’s powerful electromagnetic motor pushes 793 gallons per hour to provide reliable output for air diffusion devices. It features high-quality aluminum alloy housing and a wear-resistant cylinder and piston. The 120-volt, 18-watt O2 Commercial Pump includes a six-outlet air divider and 1/4-inch-ID connection tubing. The air divider is compatible with 3/16" or 1/4" air tubing (available separately). The O2 Commercial Pump features a one-year warranty.