Patriot Bottom Aeration System LLS-65, For Ponds to 8,000 Gallons And Pond Depths To 19 Feet Whisper Quiet Operation: Reliable, Oil Free and Extremely Energy Efficient Includes: (2) 8" Round Weighted Air Difussers. 30' of 3/8" Weighted Tubing. Necessary Fittings & Hardware. Discharge Outlet: 5/8"; Cord Length 6 Feet Output: 2.5 CFM. Maximum Depth 19'. Noise Rating (dB) 38. Volts 120. Watts 63 Frequency (Hz) 60. Dimensions (L x W x H) 8" x 7" x 9". (CFH = Cubic Feet Per Hour. CFM = Cubic Feet Per Minute). Indoor / Outdoor Use. 2 Year Warranty. Ships FedEx Ground or FedEx Home Delivery