Manufacturing of aluminum sheet metal louvers and dampers for heating, ventilation, and air conditioning

Facility	City	State	Employees	Status
Industrial Heater CORP	Cheshire	CT	20–99	● ACTIVE
Industrial Louvers INC	Delano	MN	20–99	● ACTIVE
J & a Manufacturing, INC.	Garland	TX	20–99	● ACTIVE
John W. Mcdougall Co., INC.	Nashville	TN	100–499	● ACTIVE
Kinney Manufacturing LLC	Lincoln	NE	100–499	● ACTIVE
Klune Industries INC	North Hollywood	CA	100–499	● ACTIVE
Knoxville Sheet Metal Works, INC	Knoxville	TN	20–99	● ACTIVE
Ksm Industries INC	Germantown	WI	20–99	● ACTIVE
Latitude CORP.	Verona	WI	100–499	● ACTIVE
Lebus International, INC.	Longview	TX	20–99	● ACTIVE
Lockheed Martin Aeroparts, INC.	Johnstown	PA	500+	● ACTIVE
Lowell Manufacturing Company	Pacific	MO	20–99	● ACTIVE
Martin International Enclosures, LLC	Seabrook	NH	—	● ACTIVE
Mbs Fabrication, INC.	Southbridge	MA	20–99	● ACTIVE
Mech Tronics CORP	Melrose Park	IL	20–99	● ACTIVE
MCMetal Components LLC	Grand Rapids	MI	—	● ACTIVE
Metal Forms Corporation	Milwaukee	WI	20–99	● ACTIVE
Midwest Metal Products CO	Cedar Rapids	IA	20–99	● ACTIVE
New Age Metal Fabricating CO INC	Fairfield	NJ	20–99	● ACTIVE
Northeast Industrial Manufacturing, INC.	Greenville	PA	20–99	● ACTIVE
Olympic Industries, LLC	Cordova	TN	20–99	● ACTIVE
Pro-fabricators, LLC	Smithsburg	MD	—	● ACTIVE
Proto Labs, INC.	Nashua	NH	—	● ACTIVE
PTP T Industries, INC	Signal Hill	CA	20–99	● ACTIVE
Rochester Welding Company, INC.	Oxford	MI	20–99	● ACTIVE

FactoryRegistry lists 3,473 facilities whose primary industry classification is one of the 1 industry above. This is a list by industry, not a list of makers: Census reports that establishments in these industries produced aluminum sheet metal louvers and dampers for heating, ventilation, and air conditioning, in the shares shown above, and does not say which establishments. Where a plant’s own website or a federal registry names what that plant makes, it appears on the plant’s own page with the source named.

The U.S. Census Bureau recorded this product line in 1 US manufacturing industry in the 2022 Economic Census, as the most specific line that industry reported, where 350 establishments reported producing it.

These are counts of establishments by industry: the Economic Census publishes them as industry totals and never as a list of plants.

NAPCS collection code 2038700009. Source for the product line, the establishment counts and the shares: U.S. Census Bureau, 2022 Economic Census (ECNNAPCSIND2022). Federal source data is public domain. Facility records are compiled separately by FactoryRegistry and carry their own sources.