Designed to deliver high volume of steady air flow at low-pressure ranges, ALITA Linear Air Pumps are of high efficiency, low energy consumption and perform with extremely low operating noise level. With no sliding parts and oil-less components, the air pump requires no lubrication and provides the cleanest air available. These pumps have Solid Construction for Indoor / Outdoor Operations. Ultra Quiet with Low Pulsation. 3 years Manufacturer's Warranty. AL-40 Specification: Voltage: (V) AC 115 (AC 110/115/120 or AC 220/230/240) Frequency: (Hz) 50 / 60 Rated Pressure: 0.15 bar / 2.18 psi Rated Performance: 48 lpm / 1.7 cfm Rated Input Power: 46W Sound Level: 36 dB Discharge O.D. (mm, in) 18, 11/16 Weight: 5.6 kg. / 12.5 lbs.