ECONOAIR-300 [1/2hp] Non Cabinet Pond and Lake Aerator [For 2 to 4 Surface Acres]The ECONOAIR 300 1 2hp pond and lake aerator includes these important FEATURES: *IMPORTANT NOTICE: All ECONOAIR sub surface aeration systems must house the air compressor inside a building barn or other structure to keep it out of the rain and or snow. Ventilation is also critical to keep the air compressor cool during operation. RELIANCE 6. 5 SRC 1 2hp Double Piston Air Compressor Pre Mounted On Heavy Duty Steel Pedestal Steel Wall Mounting Bracket