| GWGreat Western Foam Products | Compton | CA | — | ◇ UNVERIFIED |
 Green Mountain Panel Corporation | Brattleboro | VT | — | ◇ UNVERIFIED |
| GPGreen Polymeric Materials, INC | Detroit | MI | — | ◇ UNVERIFIED |
| GCGreenroom Coatings LLC | Long Beach | NJ | — | ◇ UNVERIFIED |
| GFGuardian Fiberglass INC | Winnsboro | SC | — | ◇ UNVERIFIED |
| GPGuardian Packaging Industries LP | Garland | TX | — | ◇ UNVERIFIED |
| HFHannemann Fiberglass INC | Azusa | CA | — | ◇ UNVERIFIED |
| HAHdi America INC | Newnan | GA | — | ◇ UNVERIFIED |
| HAHdi America INC | Lagrange | GA | — | ◇ UNVERIFIED |
| HAHealthcare Arizona, LLC | Goodyear | AZ | — | ◇ UNVERIFIED |
| HLHerc, LLC ** Inactive ** | Wilson | NC | — | ◇ UNVERIFIED |
| HSHickory Springs Manufacturing CO. | Lenoir | NC | — | ◇ UNVERIFIED |
| HSHickory Springs Manufacturing Company | Pontotoc | MS | — | ◇ UNVERIFIED |
| HSHickory Springs Manufacturing Company - High Point Foam | High Point | NC | — | ◇ UNVERIFIED |
| HSHickory Springs Manufacturing Company - Pti | Hickory | NC | — | ◇ UNVERIFIED |
| HSHickory Springs Manufacturing CO. - Triad-fabco, Plant 3 | High Point | NC | — | ◇ UNVERIFIED |
| HSHickory Springs of Cal INC | Commerce | CA | — | ◇ UNVERIFIED |
| HMHinkle Manufacturing, INC. | Perrysburg | OH | — | ◇ UNVERIFIED |
 Hi-temp Insulation INC | Camarillo | CA | — | ◇ UNVERIFIED |
| HPHoehn Plastics Incorporated | Poseyville | IN | — | ◇ UNVERIFIED |
| HAHollingsworth and Vose Company | Corvallis | OR | — | ◇ UNVERIFIED |
| HFHouston Foam Fabricators INC | Houston | MS | — | ◇ UNVERIFIED |
| HPHunter Panels LLC | Kingston | NY | — | ◇ UNVERIFIED |
| HFHuntington Foam Solutions | Greer | SC | — | ◇ UNVERIFIED |
| HIHyalus, INC. | Hawkinsville | GA | — | ◇ UNVERIFIED |
| HLHydrofera, LLC | Newark | DE | — | ◇ UNVERIFIED |
| HTHyundai Transys Seating Systems | Montgomery | AL | — | ◇ UNVERIFIED |
| IIIca, INC. | Lehighton | PA | — | ◇ UNVERIFIED |
| IFIdeal Foam Llc, Pontotoc Facility | Pontotoc | MS | — | ◇ UNVERIFIED |
| IFIdeal Foam, LLC Ripley Facility | Ripley | MS | — | ◇ UNVERIFIED |
| IPIgloo Products Corporation | Katy | TX | — | ◇ UNVERIFIED |
| IMIig Minwool LLC | Phenix City | AL | — | ◇ UNVERIFIED |
| IFIndependent Furniture Supply Company | Tupelo | MS | — | ◇ UNVERIFIED |
| IFIndependent Furniture Supply Company Inc, Brooks Road Plant | Belden | MS | — | ◇ UNVERIFIED |
| ISInfiltrator Systems Ez Flow | Saint Augustine | FL | — | ◇ UNVERIFIED |
 Inoac Usa, INC. | Moonachie | NJ | — | ◇ UNVERIFIED |
| IIInsul-therm International, INC. | Sacramento | CA | — | ◇ UNVERIFIED |
| IMIntegrated Manufacturing | Detroit | MI | — | ◇ UNVERIFIED |
| IAInternational Automotive Components | Iowa City | IA | — | ◇ UNVERIFIED |
| IFInternational Foam & Trim | Jackson | MI | — | ◇ UNVERIFIED |
 International Packaging, INC. | Colorado Springs | CO | — | ◇ UNVERIFIED |
| ITInternational Technifab Spi | Denver | CO | — | ◇ UNVERIFIED |
| ICInter-plastics Corporation | Saint Charles | IL | — | ◇ UNVERIFIED |
 Iso Technologies | Heath | OH | — | ◇ UNVERIFIED |
| IRItw Rippey CORP | El Dorado Hills | CA | — | ◇ UNVERIFIED |
| IPIvex Protective Packaging INC. | Sidney | OH | — | ◇ UNVERIFIED |
| JFJackson Furniture Industries ** Inactive ** | Asheboro | NC | — | ◇ UNVERIFIED |
| JBJohn Bishop | Jacksons Gap | AL | — | ◇ UNVERIFIED |
 Johns Manville | Winslow Township | NJ | — | ◇ UNVERIFIED |
| Johns Manville | Cleburne | TX | — | ◇ UNVERIFIED |
