DBF series low noise variable air volume fan box, ye luɔɔi de low noise dual suction centrifugal fan, ku configure vibration reducer, box inner wall (insulation) sound absorption panel, inlet air inlet set filter. A ye noise low, vibration small, volume small, weight light, wind tube connection flexible, site disassembly convenient features, with noise suppression and air filtration effect. A ye noise low, vibration small, volume small, weight light, wind tube connection flexible, site disassembly convenient features, with noise suppression and air filtration effect. Ka cɔl electronic control box, a lëu bï ya tɛmɛ bï ya tɛmɛ bï ya tɛmɛ bï ya tɛmɛ bï ya tɛmɛ bï ya tɛmɛ bï ya tɛmɛ bï ya tɛmɛ bï ya tɛmɛ bï ya tɛmɛ DBF series low noise variable volume fan box can be used as a ventilation system serial pressing. DBF series low noise variable volume fan box can be used as a ventilation system serial pressing. DBF series low noise variable volume fan box can be used as a ventilation system serial pressing. Wala a tɛ̈n yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen yen Ku bɛ̈n ya luui kɛ̈ɛ̈r ye kɛ̈ɛ̈r ye kɛ̈ɛ̈r ye kɛ̈ɛ̈r ye. A wïc bï gas bɛ̈n tɔ̈ɔ̈u në fan box yic, ka tɛ̈n ye kë ye cɔl corrosion ku natural, ka tɛ̈n ye kë ye cɔl viscous. DF series low noise variable volume fan box has been widely used in air conditioning ventilation engineering. DF series low noise variable volume fan box has been widely used in air conditioning ventilation engineering. DF series low noise variable volume fan box has been widely used in air conditioning ventilation engineering.