[Delta Electronics] Whole room purification fresh air fan, positive pressure PM2.5 air intake type duct fan, outdoor type, suitable for 70 square meters, including filter, control panel available separately (VDB40AFXT2-F)
$10,200
[Delta Electronics] PM2.5 DC variable frequency full heat exchanger suitable for 70 square meters DC energy-saving DC motor, including triple high-efficiency filter, control panel sold separately (VEB250AT3)
$38,000