The Pondmaster AP-40 Air Pump is designed to satisfy the requirements of a multitude of water-related applications. All AP-Series air pumps operate on standard 110V electric and come with a 6' power cord. The non-oil lubricated motor is designed to operate efficiently and save energy. For outdoor applications it is recommended that the unit be enclosed to protect it from the elements.Features: MAir volume: 2900 cu.in/minCord Length: 6 Foot Noise Level: 40dba Watts: 40 Weight: 9lbs Tubing: 5/8" I.D. Oxygenates ponds and aquariums Promotes a cleaner aquatic environment Promotes healthier fish and aquatic plant life Increases the breakdown of fish waste Prevents icing-over in outdoor ponds Diffuser included Not submersible Instructions (pdf format in new window)