| HSHopewell Sheet Metal Manufacturing, LLC | Hagerstown | MD | — | ◇ UNVERIFIED |
| HSHorizon Sheet Metal, INC. | Springfield | MA | — | ◇ UNVERIFIED |
| HLHormann, LLC | Sparta | TN | — | ◇ UNVERIFIED |
| HOHouse of Metal Enclosures Inc-house of Metal Enclosures INC | Hermann | MO | — | ◇ UNVERIFIED |
| HSHou-Tex Sheet Metal, Inc. | Houston | TX | — | ◇ UNVERIFIED |
| HKHovhannes Karapetyan | Los Angeles (sun Valley Area) | CA | — | ◇ UNVERIFIED |
| HIHRB Industries Corp. | Saint Charles | IL | — | ◇ UNVERIFIED |
| HSH&r Sheet Metal | Los Angeles | CA | — | ◇ UNVERIFIED |
| HAHs Alloy, LLC | Denham Springs | LA | — | ◇ UNVERIFIED |
| HIHsi INC. Dba Harvey Sheet Metal, INC. | North Little Rock | AR | — | ◇ UNVERIFIED |
| HMHsi Mechanical INC | Modesto | CA | — | ◇ UNVERIFIED |
| HMHsi Mechanical, INC. | Honolulu | HI | — | ◇ UNVERIFIED |
| HSH & S Metals INC. | Baytown | TX | — | ◇ UNVERIFIED |
| HSHspd Securities Manufacturing, INC. | Canon City | CO | — | ◇ UNVERIFIED |
| HHHueston Holdings LLC | Holland | OH | — | ◇ UNVERIFIED |
| HIHumanetics Ii, LTD. | Mcallen | TX | — | ◇ UNVERIFIED |
| HSHuskey Sheet Metal Company | Chattanooga | TN | — | ◇ UNVERIFIED |
| HBHuttig Building Products INC | Davenport | FL | — | ◇ UNVERIFIED |
| HMHVAC Metal Home LLC | Linden | NJ | — | ◇ UNVERIFIED |
| HMHw Metal Products INC | Tualatin | OR | — | ◇ UNVERIFIED |
| HMH&w Molders | Evansville | IN | — | ◇ UNVERIFIED |
| HAHydro Aluminum North America Central Region Cassville Plant | Cassville | MO | — | ◇ UNVERIFIED |
| HAHyper Alloy INC | Roseville | MI | — | ◇ UNVERIFIED |
| ISIberia Sheet Metal, LLC | New Iberia | LA | — | ◇ UNVERIFIED |
| IIIbp INC | Troy | MI | — | ◇ UNVERIFIED |
| IEIdeal Environmental Products | Los Banos | CA | — | ◇ UNVERIFIED |
| IEIdeal Environmental Products | Gilroy | CA | — | ◇ UNVERIFIED |
| IMIdeal Metal Products | Waco | TX | — | ◇ UNVERIFIED |
| ISIdeal Steel, INC. | Springfield | OH | — | ◇ UNVERIFIED |
| ISIGH Steel Fabrication Inc. | Lebanon | IN | — | ◇ UNVERIFIED |
| IMIgnacio Martinez Dba Sunset and Company | Apple Valley | CA | — | ◇ UNVERIFIED |
| IMIko Metals | Ennis | TX | — | ◇ UNVERIFIED |
| IBIlab By Pgt Innovation | North Venice | FL | — | ◇ UNVERIFIED |
| IIIlten's INC. | Cedar Rapids | IA | — | ◇ UNVERIFIED |
| IBImage Building Systems,LLC | Tempe | AZ | — | ◇ UNVERIFIED |
| IRImco Reinforced Plastics INC | Moorestown | NJ | — | ◇ UNVERIFIED |
| IEImpact Employment INC | Salt Lake City | UT | — | ◇ UNVERIFIED |
| IWImpact Windows LLC | Shreveport | LA | — | ◇ UNVERIFIED |
| IHImpakt Holdings LLC Dba Dmp | Burlingame | CA | — | ◇ UNVERIFIED |
| IMImperial Manufacturing Group USA INC. | Alton | IL | — | ◇ UNVERIFIED |
| IWImperial Window Manufacturing, LLC | Memphis | TN | — | ◇ UNVERIFIED |
| IVImperium Vinyl Windows & Doors, INC. | Anaheim | CA | — | ◇ UNVERIFIED |
| IAImpulse Air, INC | Jacksonville | FL | — | ◇ UNVERIFIED |
| IAIncast Asset Mgt. | West Sacramento | CA | — | ◇ UNVERIFIED |
| IWIndalex West INC. | Modesto | CA | — | ◇ UNVERIFIED |
| IMIndiana Model Company Incorporated - Plant 1 | Indianapolis | IN | — | ◇ UNVERIFIED |
| IMIndiana Model Company Incorporated - Plant 2 | Indianapolis | IN | — | ◇ UNVERIFIED |
| ICIndustrial Container Serv - Lakeland LLC | Auburndale | FL | — | ◇ UNVERIFIED |
| IDIndustrial Door CO INC | Minneapolis | MN | — | ◇ UNVERIFIED |
| IFIndustrial Fabricators, INC - Vc Plant | Gastonia | NC | — | ◇ UNVERIFIED |
| IFIndustrial Finishing INC | Delano | MN | — | ◇ UNVERIFIED |
| IMIndustrial Machine and Engineering Company | Monett | MO | — | ◇ UNVERIFIED |
| IMIndustrial Mechanical, INC. | Hartwell | GA | — | ◇ UNVERIFIED |
| IMIndustrial Metal Fabricators | Marine City | MI | — | ◇ UNVERIFIED |
| IPIndustrial Parts & Equipment LLC | Mcallen | TX | — | ◇ UNVERIFIED |
| IFIndustrias Feliciano Aluminum INC | Arecibo | PR | — | ◇ UNVERIFIED |
| IFIndustrias Feliciano Aluminum, INC. | Aguadilla | PR | — | ◇ UNVERIFIED |
| IMInfinite Manufacturing Group, Inc | Kearny | NJ | — | ◇ UNVERIFIED |
| IMInfinity Manufactured Industries, INC. | Largo | FL | — | ◇ UNVERIFIED |
| IBInland Buildings | Cullman | AL | — | ◇ UNVERIFIED |
| IMInLine Motion | Detroit Lakes | MN | — | ◇ UNVERIFIED |
| IMInLine Motion | Detroit Lakes | MN | — | ◇ UNVERIFIED |
| IMInnotech Manufacturing, LLC | Mount Vernon | IL | — | ◇ UNVERIFIED |
| IMInnovated Metal Fabrication Inc | Maplewood | MN | — | ◇ UNVERIFIED |
| IMInnovated Metal Fabrication Inc | Maplewood | MN | — | ◇ UNVERIFIED |
| IMInnovated Metal Fabrication INC | Blaine | MN | — | ◇ UNVERIFIED |
| IBInnovation By Degro INC | Coto Laurel | PR | — | ◇ UNVERIFIED |
| IMInnovations Manufacturing INC | Denver | CO | — | ◇ UNVERIFIED |
| IEInnovative Emergency Equipment | Riverside | CA | — | ◇ UNVERIFIED |
| IMInnovative Metals Company, INC. | Norcross | GA | — | ◇ UNVERIFIED |
| ISInnovative Sheet Metals LLC | Bradenton | FL | — | ◇ UNVERIFIED |
| IMInox Market America | Muncie | IN | — | ◇ UNVERIFIED |
| ILInstaspace, LLC | Chalfont | PA | — | ◇ UNVERIFIED |
| IPInsulated Panel Sys | Stafford | TX | — | ◇ UNVERIFIED |
| ICIntaglio Composites | Arlington | TX | — | ◇ UNVERIFIED |
| IEIntegral Engineering & Fabrication INC | City of Industry | CA | — | ◇ UNVERIFIED |
| IDIntegrated Dynamic Metals Corp | Marlborough | MA | — | ◇ UNVERIFIED |
| IMIntegrated Manufacturing Solutions LLC | Shakopee | MN | — | ◇ UNVERIFIED |
| IFIntegrity Fleet Services | Pacific | WA | — | ◇ UNVERIFIED |
| IIIntellimetal, INC. | Rochester | NY | — | ◇ UNVERIFIED |
| IAInter American Oil Works INC. | Odessa | TX | — | ◇ UNVERIFIED |
| IInterclad | Plymouth | MN | — | ◇ UNVERIFIED |
| IIInterlock Industries, INC. | Independence | MO | — | ◇ UNVERIFIED |
| ISInterlock Steel Structures U.s.a. INC. | Saint Joseph | MO | — | ◇ UNVERIFIED |
| ICIntermountain Concrete Specialties | Idaho Falls | ID | — | ◇ UNVERIFIED |
| ICInternational Cold Storage, Rainey Road LLC | Olive Branch | MS | — | ◇ UNVERIFIED |
 International Door, INC. | North Kingstown | RI | — | ◇ UNVERIFIED |
| IIInternational Impact Building Products LLC | West Palm Bch | FL | — | ◇ UNVERIFIED |
| IPInternational Processing Corporation | Carteret | NJ | — | ◇ UNVERIFIED |
| IMInterstate Manufacturing INC | Portland | OR | — | ◇ UNVERIFIED |
| IPInterstate Portable Buildings, INC. | Alexandria | LA | — | ◇ UNVERIFIED |
| IIIntigral, INC. | Cleveland | OH | — | ◇ UNVERIFIED |
| ITIowa Techniques, INC. | Hutto | TX | — | ◇ UNVERIFIED |
| ICIron City Iron Works Inc | Tarrant | AL | — | ◇ UNVERIFIED |
| ILIronluxe, LLC | Phoenix | AZ | — | ◇ UNVERIFIED |
| IPIron Properties, LLC | Rexburg | ID | — | ◇ UNVERIFIED |
| ISIsland Screen INC. | Waipahu | HI | — | ◇ UNVERIFIED |
| ISIsland Style Windows and Doors, Inc. | Naples | FL | — | ◇ UNVERIFIED |
| IItt | Panama City | FL | — | ◇ UNVERIFIED |
| JKJack Kennedy Metal Products & Bldgs INC | Langleyville | IL | — | ◇ UNVERIFIED |
