Air Pump Two Outlets up to 50 Gallon Aquarium 30 GPH Free Check Valves Description : One of the most reliable and budget-friendly air pumps on the market. Powerful, high output pumps fulfill most aquarium air requirements and are built to ensure years of dependable, trouble-free use. Rubber stabilizer feet and technologically advanced design offer smooth, quiet operation. Convenient air pumps can be wall-mounted to save space. It is perfect for small to mid size aquariums up to 50 gallons. Features:  For aquariums up to 50 Gallons  2 outlets  Super quiet design, no annoying noise Specifications:  Max Flow: 30GPH  Pressure: 0.01 MPA or 1.45 PSI  Dimension: 3.75 x 2.25 x 1.75 inches (L x W x H)  110V-120V / 60Hz, 2.5W Includes: (1) Air Pump (2) FREE Check Valves