The Elemental Solutions O2 Commercial Pumps powerful electromagnetic motor pushes 571 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 120V, 20W O2 commercial pump includes a six-outlet air divider and ΒΌ-inch ID connection tubing. The air divider is compatible with 3/16-inch ID tubing (available separately). The Elemental Solutions O2 Commercial Pump features a one-year warranty.