... improve greenhouse inner environment; two options, one is single speed, one is variable speed circulation.Product descriptionStainless ... long life spanStable performance, low noise, low power consumptionSingle and variable speed models are available.NameModelVoltageFrenquencyPowerRMPAir ... 5800m3/h ZLFJ400 Voltage:220V, Frequency: 50Hz, Rated Power: 145W, RMP:1400r/min, Air Flow: 2880m3/hGreenhouse ...