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

10,034 FACILITIES
FacilityCityStateEmployeesStatus
Kriewall Enterprises INCRomeoMI— ACTIVE
Kryton Engineered Metals, INCCedar FallsIA— ACTIVE
L3 Technologies, INC.WilmingtonMA— ACTIVE
Lab Crafters, INC.RonkonkomaNY100–499 ACTIVE
La Follette Machine & Tool Company, INC.La FolletteTN— ACTIVE
Lai International, LLCWestminsterMD— ACTIVE
Lake Air Products, LLCMinneapolisMN— ACTIVE
Lakeshore Cutting Solutions, INC.ZeelandMI— ACTIVE
Lanzen INCMancelonaMI20–99 ACTIVE
Lasasco INCBoiseID— ACTIVE
Laser Cutting COHarrison TownshipMI— ACTIVE
Laserform LLCDe PereWI— ACTIVE
Laser Masters, INC.HoustonTX20–99 ACTIVE
Laser North, INCBaragaMI20–99 ACTIVE
L C Metals INCAustellGA— ACTIVE
Ldi Industries, INC.ManitowocWI— ACTIVE
Lefiell Manufacturing CompanySanta Fe SpringsCA— ACTIVE
Lenco Industries, INC.PittsfieldMA— ACTIVE
Lewis Engineering CompanyMarshallTX— ACTIVE
Liberty Pattern Company, INC.New LibertyIA— ACTIVE
Liberty Steel Fabrication INCFyffeAL20–99 ACTIVE
Libra Guaymas LLCMentorOH— ACTIVE
Livers Bronze LLCKansas CityMO— ACTIVE
Living Design Studios, INC.ErieCO20–99 ACTIVE
Lockheed Martin CorporationPinellas ParkFL— ACTIVE
Lodolce Machine Co, INCSaugertiesNY— ACTIVE
Louis Hoffmann CO.Menomonee FallsWI— ACTIVE
Lyons Tool & Die Company,theMeridenCT20–99 ACTIVE
Mac Cal COSan JoseCA— ACTIVE
Mach Machine INCHudsonMA— ACTIVE
Macias Sheet MetalLos AngelesCA— ACTIVE
Magic Metals, INC.Union GapWA— ACTIVE
Magline INCStandishMI100–499 ACTIVE
Magnetic Systems International, INCBoyne CityMI— ACTIVE
Manufacturing Sciences CorporationOak RidgeTN— ACTIVE
Mapp Technologies, L.l.c.JoplinMO100–499 ACTIVE
Martinez and Turek, INC.RialtoCA— ACTIVE
Martin Machine & Welding INCHalsteadKS— ACTIVE
Mass Precision, INC.San JoseCA— ACTIVE
Master Metal Products CompanySan JoseCA— ACTIVE
Matenaer CORPWest BendWI— ACTIVE
Mauell CORPDillsburgPA20–99 ACTIVE
Mbi Construction Services INCYakimaWA— ACTIVE
Mcalpin Industries INC.RochesterNY— ACTIVE
Mcdonald Air & Sheet Metal INC.OrlandoFL20–99 ACTIVE
Mcgill Airflow LLCFountain InnSC20–99 ACTIVE
Md Plastics INC.ColumbianaOH— ACTIVE
Mercury Aircraft INCHammondsportNY100–499 ACTIVE
Mercury Products CORPSchaumburgIL— ACTIVE
Meta Fab, INCHillsboroOR— ACTIVE
Metalcrafters, INC.MethuenMA20–99 ACTIVE
Metalcraft of Mayville INCMayvilleWI100–499 ACTIVE
Metal Etch Services INCSan MarcosCA20–99 ACTIVE
Metal Impact LLCElk Grove VillageIL— ACTIVE
Metallic Ladder Manufacturing CORP.RandolphNY— ACTIVE
Metallion Industries, INC.EstacadaOR— ACTIVE
Metal Processing, INCRadfordVA— ACTIVE
Metal Roofing Systems INCStanleyNC— ACTIVE
Metal Tech INCGulfportMS— ACTIVE
Metamora Industries, LLCMetamoraIL20–99 ACTIVE
Met International Trading Company, INC.HoustonTX— ACTIVE
Meva Formwork Systems INCSpringfieldOH— ACTIVE
Meyer Tool, INC.CincinnatiOH500+ ACTIVE
Mid-continent Engineering, LLCMinneapolisMN— ACTIVE
Mid Valley Industries, LLCKaukaunaWI— ACTIVE
Midwest Metal Fabrication LLCManitowocWI— ACTIVE
Midwest Tool, INC.JoplinMO— ACTIVE
Mike Gibson Manufacturing INCCaldwellID— ACTIVE
Mikron Manufacturing, INC.Colorado SpringsCO— ACTIVE
Millennium Metalcraft, INC.FremontCA— ACTIVE
Miller-leaman, INC.Daytona BeachFL— ACTIVE
Mill Rose COMentorOH— ACTIVE
Milton Manufacturing, INC.DetroitMI— ACTIVE
Milton, Vermont Sheet Metal, INCMiltonVT— ACTIVE
Minerva Welding and Fabricating, INC.MinervaOH— ACTIVE
Mini-flex CorporationVenturaCA— ACTIVE
Mississippi Valley Metals LLCMaquoketaIA— ACTIVE
Mjm Manufacturing INCMiami LakesFL— ACTIVE
Mmlj INCHoustonTX— ACTIVE
Mobile Component, INCBoiseID— ACTIVE
Modular Container Systems, INC.LavoniaGA20–99 ACTIVE
Mt Solar LLCCharloMT— ACTIVE
Murray's Sheet Metal Company INCParkersburgWV— ACTIVE
Mwgh LLCCincinnatiOH— ACTIVE
Naimor INCSnohomishWA— ACTIVE
National Cart CO INCSaint CharlesMO— ACTIVE
National Fence Systems INC.AvenelNJ— ACTIVE
National Metal Stampings, INCLancasterCA— ACTIVE
Nema Enclosures Manufacturing of Texas LLCHoustonTX— ACTIVE
New American Reel Company, LLCAntwerpOH— ACTIVE
New England Cnc, INCHamdenCT— ACTIVE
New York Stampings, INCRochesterNY— ACTIVE
Nmc Metals INCNilesOH20–99 ACTIVE
Nor-fab Manufacturing INCGladstoneMI— ACTIVE
Norrisbuilt Fabrication and Mobile Welding, LLCNortonVA20–99 ACTIVE
Northern Fab of Menominee LLCMenomineeMI20–99 ACTIVE
Northern Lights Laser INCDelanoMN— ACTIVE
Noveon Magnetics INCSan MarcosTX— ACTIVE
Numericraft, INCTucsonAZ— ACTIVE
Observa-dome Laboratories, INC.JacksonMS— 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.

Related lines
Manufacturing of other heating system products, including wall and baseboard heating units, boilers, expansion tanks, mechanical stokers, nonelectric prefabricated metal fireplaces, electric swimming pool heaters, direct-fired water heater tanks, oil andManufacturing of domestic heating stoves (excluding portable), hearth appliances, and freestanding wood fireplaces (excluding electric and parts)Manufacturing of solar energy collectors (water or air)
Industries
Metal FabricatorsAll product lines

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.