NAICS 333412 — Industrial and Commercial Fan and Blower and Air Purification Equipment Manufacturing 
BEA sector: Air purification and ventilation equipment manufacturing
Activity: Aircurtains manufacturing
Activity: Attic fans manufacturing
Activity: Blower filter units manufacturing
Activity: Exhaust fans, industrial and commercial-type, manufacturing
Activity: Fans, industrial and commercial-type, manufacturing
Activity: Ventilating fans, industrial and commercial-type, manufacturing