Blue Diamond ET 40 Septic or Pond Linear Diaphragm Air Pump by Blue Diamond Pumps &#9989; BOOSTS SEPTIC WASTE DECOMPOSITION: By adding clean, oil free oxygen to septic system wastewater, Blue Diamond's Enviro ET 40 air pump encourages aerobic bacteria to decompose materials. Its weatherproof and sturdy design makes it an excellent wastewater pump. It is also effective in a pond. &#9989; OPERATES QUIETLY: This air pump produces little sound, 40 decibels. It uses 30 watts of electricity and has a maximum air flow of 1.41 cubic feet per minute. Its maximum pressure is 0.15 bar. &#9989; EASY TO INSTALL AND SERVICE: Simple to put in place, this pump comes complete with fittings. It is easily serviced with replaceable diaphragm kits (sold separately) for a long life. &#9989; 2 YEAR MANUFACTURER WARRANTY - MADE TO LAST: In addition to being weatherproof, this durable pump features a specially formulated material for its linear diaphragm. Constructed to last, the pump has a 2 year warranty from its manufacturer. &#9989; PERFECT SIZE: Measuring 8.66 inches long, the pump is 6.10 inches wide and 7.48 inches tall. It weighs 9.48 pounds. Its connector has a 0.55 inch outside diameter.