The Resun Air Pump LP60 quietly delivers a maximum air output of 4200 litre/hr (70 litre per minute), which is suitable for the vast majority of fish and koi ponds. It must be housed under cover, out of the weather. Installation hint: To increase the life of the rubber diaphragms, the unit must have back pressure. Also used for: Deep water septic tank aeration, Natural swimming pond or pool aeration, Aquaculture pond aeration, Commercial and industrial water aeration, Bubble baths Ideal for driving 3-4 EkoSlim Airlift pumps and moving bed filter of a 10-20,000 litre pond Features: - Very quiet - uses electromagnetic linear diaphragm technology - Cast aluminium body - Voltage/Wattage: 240V / 60W - Automatic thermal cut-out overload protection - Cable length: 1.5m - Max pressure: 0.037MPa / 0.37 bar / 370 mbar / 3.7 m H2O - Max air output: 4200L/hr (70 litre/minute) - Air pump outlet diameter: 20mm - Rated IPX4 (meaning - Should be placed in a low dust environment but will tolerate rain and light sprinkling) - Must be set-up above the water level or fitted with check valve (eg Valterra) - Maximum water depth for placed air stones: 3.5m - Supplied with a plastic 14 outlet manifold to suit 4mm silicon air line - Air Pump dimensions: 245mm (L) x 205mm (W) x 210mm (H) - Weight: Air Pump, 5.45kg. Cartoned pump: 6.3kg - 60 LPM. Max pressure: 0.037MPa / 0.37 bar / 370 mbar / 3.7 m H2O