Patriot Bottom Aeration System LLS-45, For Ponds to 4,000 Gallons And Pond Depths To 15Feet Whisper Quiet Operation: Reliable, Oil Free and Extremely Energy Efficient Includes: (2) 8" Weighted Air Difussers. 25' of 3/8" Weighted Tubing. Necessary Fittings & Hardware. Discharge Outlet: 5/8"; Cord Length 6 Feet Output: 2.06 CFM. Maximum Depth 15'. Noise Rating (dB) 35. Volts 120. Watts 50 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