Danner 4240 Ap-40 Air Pump, Energy Efficient Motor, Quiet, High Vol Steady Air Flow.

Supreme Oxy-Flo High Volume Air Pumps
For Freshwater & Saltwater Aquariums
All Supreme Air Pumps achieve high output by using a time-proven diaphragm design. Supreme Air Pumps can be used for large or multiple aquarium aeration and filtration due to their larger air output. Features

• Easy-to-Use Air Pump that Provides Oxygen to Freshwater and Saltwater Aquariums
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• Quiet and Reliable Operation
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• Energy-Efficient Motor
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• High Volume, Diaphragm-Driven Pump has Steady Air Flow and Requires No Lubrication
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• Great for Indoor Gardening (Hydroponic) Systems
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• Optional Diaphragm Repair Kit Available
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  Country of Origin - US