Fresh air system Household two-way duct ventilation system Indoor full heat exchanger Fresh air ventilator commercial

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Color classification:: Factory bare metal price, freight contact customer service 99% customer reviews Product cost-effective 200 air volume - two-way - heat exchange 200 air volume - multiple purification type 350 air volume - two-way - heat exchange 350 air volume - multiple purification type 500 air volume - two-way - heat exchange 500 air volume - multiple purification type 800 air volume - two-way - heat exchange 800 air volume - multiple purification type 1000 air volume - two-way - heat exchange 1000 air volume - multiple purification type 1200 air volume - two-way - heat exchange 1200 air volume - multiple purification type 1500 air volume - two-way - heat exchange 1500 air volume - multiple purification type 2000 air volume - two-way - heat exchange 2000 air volume - multiple purification type 2500 air volume - double Directional - heat exchange 3000 air volume - bi-directional - heat exchange 4000 air volume - two-way - heat exchange 5000 air volume - two-way - full heat exchange 6000 air volume - two-way - full heat exchange 7000 air volume - two-way - full heat exchange