WLV and DLV Series are built of robust fan construction suitable for heavy duty applications. The series are typically used in intensive animal husbandry buildings, industrial buildings, factories and workshops. WLV and DLV series are available in 30 cm to 92 cm and include three-phase motors. Air volumes of WLV at 0 Pa range is from 1.400 m3/h to 13.700 m3/h (50 Hz fans). Air volumes of DLV series at 0 S.P. range is from 2.050 m3/h to 18.400 m3/h (50 Hz fans).