CPC Subgroup
F24F 7/08 with separate ducts for supplied and exhausted air
Full Title
Ventilation > with ducting systems > with forced air circulation, e.g. by fan > with separate ducts for supplied and exhausted air
F24F 7/08 Ventilation > with ducting systems > with forced air circulation, e.g. by fan > with separate ducts for supplied and exhausted air