Manufacturing of sheet metal air-conditioning ducts (including dust collection ducts), stove pipe, furnace smoke pipe, and elbows

Facility	City	State	Employees	Status
Daniel Leiss	Somerset	PA	20–99	● ACTIVE
Danser, INC	Davisville	WV	—	● ACTIVE
DDD. D. Wire Co., INC.	Temple City	CA	—	● ACTIVE
Decker Machine Works, INC.	Greenfield	MA	20–99	● ACTIVE
Delta Scientific Corporation	Palmdale	CA	100–499	● ACTIVE
Desert Engineering Group INC	Tucson	AZ	—	● ACTIVE
Diamond Manufacturing Company	Wyoming	PA	100–499	● ACTIVE
DMDixie Metalcraft CORP	Hazel Green	AL	20–99	● ACTIVE
Dj Acquisition Management CORP	Ontario	NY	20–99	● ACTIVE
Dolphin Manufacturing, INC	Taylor	MI	—	● ACTIVE
Donaldson Company INC	Auburn	AL	100–499	● ACTIVE
Donaldson Company INC	Stevens Point	WI	100–499	● ACTIVE
Dowding Industries INC	Eaton Rapids	MI	100–499	● ACTIVE
Drt Aerospace LLC	Sidney	OH	20–99	● ACTIVE
Dynamic Design and Manufacturing, INC.	Niwot	CO	20–99	● ACTIVE
Dynamic Metals, LLC	Elkhart	IN	100–499	● ACTIVE
Earnest Products INC	Sanford	FL	100–499	● ACTIVE
Eastern Metal Works, INC.	Milford	CT	20–99	● ACTIVE
E. C. Styberg Engineering Company	Racine	WI	100–499	● ACTIVE
Electronic Sheetmetal Craftsmen of Florida, INC.	Melbourne	FL	—	● ACTIVE
Engineered Finishing, INC.	Minneapolis	MN	—	● ACTIVE
Essner Manufacturing LP	Fort Worth	TX	20–99	● ACTIVE
Falcon Sheet Metal, INC	North Salt Lake	UT	—	● ACTIVE
FIFalso Industries, INC.	Syracuse	NY	20–99	● ACTIVE
Ferno Washington, INC.	Wilmington	OH	100–499	● ACTIVE

FactoryRegistry lists 10,034 facilities whose primary industry classification is one of the 3 industries above. This is a list by industry, not a list of makers: Census reports that establishments in these industries produced sheet metal air-conditioning ducts (including dust collection ducts), stove pipe, furnace smoke pipe, and elbows, 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 3 US manufacturing industries in the 2022 Economic Census, as the most specific line those industries reported. At least 667 establishments reported producing it; the count for 1 of those industries was withheld.

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 2038675000. 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.