ASAIR is an aeraulic engineering manufacturer whose smoke-control range covers axial smoke-extraction fans, roof extract turrets, centrifugal boxes and induction jet fans for car-park ventilation and smoke clearance. Its smoke fans are certified to EN 12101-3 in the F200, F300 and F400 classes, with the BOX-T HT centrifugal box certified at F400 for two hours, alongside ATEX-rated industrial equipment.