Sentinel Deluxe Aeration System for ponds up to two acres depending on shape and depth of pond. 1/4 hp Rotary Vane RV33 compressor, 4.5 cfm, 2.3 amps, aerates up to 18′ deep. PA50DLD kit includes compressor, two valve outlet assembly, pressure gauge and pressure relief valve all mounted in SC22 lockable steel cabinet with cooling fan and electrical outlet installed. Kit also includes 200′ of 1/2″ Quick Sink tubing and fittings for connections. Kit does not include diffusers making it an ideal solution to select diffusers that best fit the application.