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PCE
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CPC Subgroup
F24F 7/10

with air supply, or exhaust, through perforated wall, floor or ceiling (outlet members for directing or distributing air F24F13/06)

Full Title

Ventilation > with ducting systems > with forced air circulation, e.g. by fan > with air supply, or exhaust, through perforated wall, floor or ceiling (outlet members for directing or distributing air F24F13/06)