This U.S. industry comprises establishments primarily engaged in (1) manufacturing stationary air purification equipment, such as industrial dust and fume collection equipment, electrostatic precipitation equipment, warm air furnace filters, air washers, and other dust collection equipment, and/or (2) manufacturing attic fans and industrial and commercial fans and blowers, such as commercial exhaust fans and commercial ventilating fans. Establishments primarily engaged in--

Including:

• Air purification equipment, stationary, manufacturing
• Air scrubbing systems manufacturing
• Air washers (i.e., air scrubbers) manufacturing
• Aircurtains manufacturing
• Attic fans manufacturing
• Blower filter units manufacturing
• Dust and fume collecting equipment manufacturing
• Electrostatic precipitation equipment manufacturing
• Exhaust fans, industrial and commercial-type, manufacturing
• Fans, industrial and commercial-type, manufacturing
• Filters, air-conditioner, manufacturing
• Filters, furnace, manufacturing
• Furnace filters manufacturing
• Ventilating fans, industrial and commercial-type, manufacturing