Manufacturing of sheet metal air-conditioning ducts

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

Facility	City	State	Employees	Status
Master Lock Company LLC	Deerfield	IL	—	● ACTIVE
Master Sheetmetal Works INC	Hanahan	SC	—	● ACTIVE
Master Tool & Machine, LLC	Morrison	TN	—	● ACTIVE
Materials Fabrication and Testing Services, INC.	Oak Ridge	TN	—	● ACTIVE
Materials Science International INC	Columbus	OH	—	● ACTIVE
Material System INC	Childersburg	AL	—	● ACTIVE
Matern Metal Works, INC	Mansfield	OH	—	● ACTIVE
Matthew Warren, INC	Santa Maria	CA	—	● ACTIVE
Maverick Manufacturing LLC	Spartanburg	SC	—	● ACTIVE
Max Machining LLC	Telford	PA	—	● ACTIVE
Mayville Engineering Company, INC.	Milwaukee	WI	—	● ACTIVE
Mbt Product Design & Manufacturing INC	Waynesboro	PA	—	● ACTIVE
Mckeon Door East, INC.	Bellport	NY	—	● ACTIVE
Mcmillan Design, INC.	Gig Harbor	WA	—	● ACTIVE
Measured Fabrication, LLC	Memphis	TN	—	● ACTIVE
Mechanical Industries Wi LLC	Milwaukee	WI	—	● ACTIVE
Meld Printworks Corporation	Christiansburg	VA	—	● ACTIVE
Meridian Rapid Defense Group LLC	Pasadena	CA	—	● ACTIVE
Merrick Construction Companies, INC.	Louisville	KY	—	● ACTIVE
Merrill Technologies Group, LLC	Alma	MI	—	● ACTIVE
Merrill Technologies Group, LLC	Saginaw	MI	—	● ACTIVE
Metalbuilt LLC	Chesterfield	MI	—	● ACTIVE
Metalcraft of Pensacola, INC	Pensacola	FL	—	● ACTIVE
Metal Fabricators Plus LLC	Indianapolis	IN	—	● ACTIVE
Metal Works Machine and Maintenance, LLC	Calvert City	KY	—	● ACTIVE
Metal Workz L.l.c	Albany	KY	—	● ACTIVE
Metrobike LLC	Washington	DC	—	● ACTIVE
MMMetro Metal Products, INC.	Medford	NY	—	● ACTIVE
MHMetropolitan Home Improvement, INC.	Carolina	PR	—	● ACTIVE
MSMetro Stamping & Manufacturing LLC	Haltom City	TX	—	● ACTIVE
Michigan Manufactured Products, INC	Port Huron	MI	—	● ACTIVE
Midwest Fabrication & Supply, LLC	Saint Paul	MN	—	● ACTIVE
Mier Products, INC	Kokomo	IN	—	● ACTIVE
Milco Mfg LLC	Farmington Hills	MI	—	● ACTIVE
Military Hardware, LLC	Jacksonville	NC	—	● ACTIVE
Miller Fabrication and Welding Incorporated	Lexington	OH	—	● ACTIVE
Miller Metal Fabrication INC	Bridgeville	DE	—	● ACTIVE
Mills Specialty Metals L.l.c.	Marietta	GA	—	● ACTIVE
Minestone Construction LLC	Edison	NJ	—	● ACTIVE
Minton & Roberson INC	Chesapeake	VA	—	● ACTIVE
Mitchell Metals, LLC	Marietta	GA	—	● ACTIVE
M & M Business Ventures LLC	Hurricane	UT	—	● ACTIVE
MBMobile Barriers LLC	Golden	CO	—	● ACTIVE
Momentum Manufacturing Group - North LLC	Saint Johnsbury	VT	—	● ACTIVE
Monarch Trophy, INC.	Houston	TX	—	● ACTIVE
Montoya's Ornamental Ironworks LLC	Tucson	AZ	—	● ACTIVE
Monument Forge Manufacturing LLC	Hampton	VA	—	● ACTIVE
Motion Metalworks LLC	Wrens	GA	—	● ACTIVE
Mountain Country Equipment L.l.c.	Nephi	UT	—	● ACTIVE
Mountain Manufacturing, LLC	Post Falls	ID	—	● ACTIVE

FactoryRegistry lists 10,317 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.