| IMIndiana Model Company Incorporated - Plant 2 | Indianapolis | IN | — | ◇ UNVERIFIED |
| IRIndian River All-fab, INC. | Vero Beach | FL | — | ◇ UNVERIFIED |
| IDIndustrial Design & Fabrication INC | Mcewen | TN | — | ◇ UNVERIFIED |
| IFIndustrial Fabricators, INC. | Gastonia | NC | — | ◇ UNVERIFIED |
| IFIndustrial Fabricators, INC - Vc Plant | Gastonia | NC | — | ◇ UNVERIFIED |
| IGIndustrial Graphics Corporation | Chicago | IL | — | ◇ UNVERIFIED |
| IHIndustrial Hardfacing, Inc | Lamoni | IA | — | ◇ UNVERIFIED |
| IHIndustrial Holdings of Tampa LLC | Tampa | FL | — | ◇ UNVERIFIED |
| IMIndustrial Mechanical, INC. | Hartwell | GA | — | ◇ UNVERIFIED |
| IMIndustrial Metal Craft, INC. | Gastonia | NC | — | ◇ UNVERIFIED |
| IMIndustrial Metal Enterprises, LLC | Idaho Falls | ID | — | ◇ UNVERIFIED |
| IMIndustrial Metal Fabricators | Marine City | MI | — | ◇ UNVERIFIED |
| IMIndustrial Metal Products of Arberdeen, INC | Aberdeen | NC | — | ◇ UNVERIFIED |
| ISIndustrial Sales & Manufacturing | Erie | PA | — | ◇ UNVERIFIED |
| ISIndustrial Screen Process Services, INC. | Toledo | OH | — | ◇ UNVERIFIED |
| ISIndustrial Signs | Metairie | LA | — | ◇ UNVERIFIED |
| ISIndustrial Signs & Neon | Oklahoma City | OK | — | ◇ UNVERIFIED |
| ISIndustrial Splicing and Sling, L.l.c. | Tulsa | OK | — | ◇ UNVERIFIED |
| ITIndustrial Tool & Die INC | Santa Ana | CA | — | ◇ UNVERIFIED |
| ITIndustrial Tube Corp | Hillsborough | NJ | — | ◇ UNVERIFIED |
| ISIndustry Signs | Shavano Park | TX | — | ◇ UNVERIFIED |
| IIInex Image LLC. | Gainesville | GA | — | ◇ UNVERIFIED |
| IAInfinite Ascent LLC | San Marcos | CA | — | ◇ UNVERIFIED |
| IMInfinity Manufactured Industries, INC. | Largo | FL | — | ◇ UNVERIFIED |
| IPIn-Flight Products, LLC | Stanton | CA | — | ◇ UNVERIFIED |
| IAInk and Press, LLC | Douglasville | GA | — | ◇ UNVERIFIED |
| IOInk Outside the Box Incorporated | Hampton | NH | — | ◇ UNVERIFIED |
| IGInkwell Graphix | Watertown | NY | — | ◇ UNVERIFIED |
| IGInnomark Group LLC | Toledo | OH | — | ◇ UNVERIFIED |
| IMInnovated Metal Fabrication Inc | Maplewood | MN | — | ◇ UNVERIFIED |
| IMInnovated Metal Fabrication Inc | Maplewood | MN | — | ◇ UNVERIFIED |
| IMInnovated Metal Fabrication INC | Blaine | MN | — | ◇ UNVERIFIED |
| ILInnovationsmith, LLC | Midlothian | TX | — | ◇ UNVERIFIED |
| IDInnovative Display & Design, Inc. | Milford | CT | — | ◇ UNVERIFIED |
| IEInnovative Emergency Equipment | Riverside | CA | — | ◇ UNVERIFIED |
| IEInnovative Exhaust Solutions, Inc | Lincoln | NE | — | ◇ UNVERIFIED |
| IMInnovative Materials Solutions, LLLP | Golden | CO | — | ◇ UNVERIFIED |
| IMInnovative Medical Device Solutions | Chandler | AZ | — | ◇ UNVERIFIED |
| IRInnovative Renovations Inc | Denver | CO | — | ◇ UNVERIFIED |
| ISInnovative Sheet Metals LLC | Bradenton | FL | — | ◇ UNVERIFIED |
 Innovative Signs, INC. | Caledonia | WI | — | ◇ UNVERIFIED |
| ILInnovision Led | Buffalo | NY | — | ◇ UNVERIFIED |
| IMInox Market America | Muncie | IN | — | ◇ UNVERIFIED |
| ICInpro Corporation-signscape Division | Muskego | WI | — | ◇ UNVERIFIED |
| ISInsignia Sign INC | Renton | WA | — | ◇ UNVERIFIED |
| IBInspired Bronze, INC. | Deland | FL | — | ◇ UNVERIFIED |
| IEIntegral Engineering & Fabrication INC | City of Industry | CA | — | ◇ UNVERIFIED |
| IPIntegral Properties LLC | Tumwater | WA | — | ◇ UNVERIFIED |
| IDIntegrated Dynamic Metals Corp | Marlborough | MA | — | ◇ UNVERIFIED |
| IHIntegrated Holdings, Inc. | Romeo | MI | — | ◇ UNVERIFIED |
| IMIntegrated Manufacturing Solutions LLC | Shakopee | MN | — | ◇ UNVERIFIED |
| IMIntegrated Materials Group, LLC | Elkhart | IN | — | ◇ UNVERIFIED |
| IFIntegrity Fleet Services | Pacific | WA | — | ◇ UNVERIFIED |
| ISIntegrity Sales Network, LLC | Gaylord | MI | — | ◇ UNVERIFIED |
| ISIntegrity Sign Solutions Inc | New Albany | IN | — | ◇ UNVERIFIED |
| ISIntegrity Signs Oregon | Woodburn | OR | — | ◇ UNVERIFIED |
| ISIntegrity Signs Oregon LLC | Eugene | OR | — | ◇ UNVERIFIED |
| IHIntelligent Hardware Inc | Boyertown | PA | — | ◇ UNVERIFIED |
| ISIntelligrated Sources, LLC | Montgomery | NY | — | ◇ UNVERIFIED |
| IIIntellimetal, INC. | Rochester | NY | — | ◇ UNVERIFIED |
| IAInter American Oil Works INC. | Odessa | TX | — | ◇ UNVERIFIED |
| ITIntercontinental Truck Body, INC | Conrad | MT | — | ◇ UNVERIFIED |
| IIInterlock Industries, INC. | Independence | MO | — | ◇ UNVERIFIED |
| ICIntermountain Concrete Specialties | Idaho Falls | ID | — | ◇ UNVERIFIED |
| ISIntermountain Superform INC | American Fork | UT | — | ◇ UNVERIFIED |
| IMInternational Manufacturers Representatives | Baton Rouge | LA | — | ◇ UNVERIFIED |
| ISInternational Sign & Design Corporation | Tampa | FL | — | ◇ UNVERIFIED |
| ISInternational Steel Service Corporation | Compton | CA | — | ◇ UNVERIFIED |
| ISInternational Steel Service Corporation | Los Angeles | CA | — | ◇ UNVERIFIED |
| ITInternational Titanium Corporation | New Brighton | PA | — | ◇ UNVERIFIED |
| ITInternational Tool, INC. | Trempealeau | WI | — | ◇ UNVERIFIED |
| IMInterstate Manufacturing INC | Portland | OR | — | ◇ UNVERIFIED |
| ISInterstate Signcrafters, INC. | West Palm Beach | FL | — | ◇ UNVERIFIED |
| ITInterstate Traffic Signs INC | Walker | MN | — | ◇ UNVERIFIED |
| IRInvacare Respiratory Prods Group | Sanford | FL | — | ◇ UNVERIFIED |
| ISInvisible Structures, INC. | Aurora | CO | — | ◇ UNVERIFIED |
| ITIowa Techniques, INC. | Hutto | TX | — | ◇ UNVERIFIED |
| IOI Own This LLC | Anchorage | AK | — | ◇ UNVERIFIED |
| IFIpc Fabricators LLC | Tulsa | OK | — | ◇ UNVERIFIED |
| ICIql CORP | Louisville | KY | — | ◇ UNVERIFIED |
| ICIql Corporation | Louisville | KY | — | ◇ UNVERIFIED |
| ICIron City Iron Works Inc | Tarrant | AL | — | ◇ UNVERIFIED |
| IDIron Design By Jeremy, LLC | Birmingham | AL | — | ◇ UNVERIFIED |
| IFIron Fortress Security | Columbus | OH | — | ◇ UNVERIFIED |
| ILIronluxe, LLC | Phoenix | AZ | — | ◇ UNVERIFIED |
| ISIronman Safe Company, LLC | Dalton Gardens | ID | — | ◇ UNVERIFIED |
| I5Ironwood 53 LLC | Rock Valley | IA | — | ◇ UNVERIFIED |
| IDISB Designs Inc. | Silver Spring | MD | — | ◇ UNVERIFIED |
| ISI Signz & Awnings LLC | Tremonton | UT | — | ◇ UNVERIFIED |
| IAIsignz & Awnings LLC | Salt Lake City | UT | — | ◇ UNVERIFIED |
| INIsuzu North America CORP. | Buena Park | CA | — | ◇ UNVERIFIED |
| ICItal Custom Signs INC | West Covina | CA | — | ◇ UNVERIFIED |
| JKJack Kennedy Metal Products & Bldgs INC | Langleyville | IL | — | ◇ UNVERIFIED |
| JMJack Martin's Signworks | Hanford | CA | — | ◇ UNVERIFIED |
| JFJackson Fabrication | Franklin | GA | — | ◇ UNVERIFIED |
| JSJacksonville Steel Company | Little Rock | AR | — | ◇ UNVERIFIED |
| JMJacquet Metal Service | Carson | CA | — | ◇ UNVERIFIED |
| JEJade Equipment Corporation | Huntingdon Valley | PA | — | ◇ UNVERIFIED |
| JAJ a Gerger Steel Fabrication | Columbus | NE | — | ◇ UNVERIFIED |
| JPJaime Preciado | Los Angeles | CA | — | ◇ UNVERIFIED |
