 Goergen-Mackwirth Co., Inc. | Buffalo | NY | — | ◇ UNVERIFIED |
| GSGolden Steel, INC. | New York | NY | — | ◇ UNVERIFIED |
| GVGood View Metals | Apollo | PA | — | ◇ UNVERIFIED |
| GSGordon Sheet Metal INC | Kailua Kona | HI | — | ◇ UNVERIFIED |
| GPGp Precision, INC. | Hackettstown | NJ | — | ◇ UNVERIFIED |
| GIGrabek Iron Works, Inc. | Crown Point | IN | — | ◇ UNVERIFIED |
| GPGrayd 'a' Precision Metal Fabrications | Santa Fe Springs | CA | — | ◇ UNVERIFIED |
| GWGreater Wisconsin Sheet Metal, INC | Plymouth | WI | — | ◇ UNVERIFIED |
| GLGreat Lakes Manufacturing | Corry | PA | — | ◇ UNVERIFIED |
 Greenheck Fan CORP | Schofield | WI | — | ◇ UNVERIFIED |
| GMGreenwood Manufacturing INC. | Houston | TX | — | ◇ UNVERIFIED |
| GMGregory Metal Fabrication | Crandall | GA | — | ◇ UNVERIFIED |
| GZGreg Zimont | Panama City Beach | FL | — | ◇ UNVERIFIED |
| GVGSA Ventures LLC | Foley | AL | — | ◇ UNVERIFIED |
| GSGuch Sheet Metal and Ac INC | Stuart | FL | — | ◇ UNVERIFIED |
| GAGuernsey Architectural Solutions, INC. | Boca Raton | FL | — | ◇ UNVERIFIED |
| GCGulf Coast Signs of Sarasota | Sarasota | FL | — | ◇ UNVERIFIED |
| GCGulf Coast Supply & Manufacturing LLC | Sebring | FL | — | ◇ UNVERIFIED |
| GCGulf Coast Supply & Manufacturing, LLC | Montgomery | AL | — | ◇ UNVERIFIED |
| GMGutierrez Manufacturing INC | Santa Ana | CA | — | ◇ UNVERIFIED |
| GSGuttermans Supply Corporation of America | Portland | OR | — | ◇ UNVERIFIED |
| HSHaida Sheet Metal LLC | Battle Ground | WA | — | ◇ UNVERIFIED |
| HIHaimetal INC | Sun Valley | CA | — | ◇ UNVERIFIED |
| HMHall's Mechanical Services LLC | Fieldale | VA | — | ◇ UNVERIFIED |
| HSHalls Sheet Metal Fabrication Inc | Galena | OH | — | ◇ UNVERIFIED |
| HWHamlin Welding and Fabricating LLC | Melbourne | FL | — | ◇ UNVERIFIED |
| HMHammersmith Metal Works | Springfield | MO | — | ◇ UNVERIFIED |
| HSHammond Sheet Metal | El Dorado Springs | MO | — | ◇ UNVERIFIED |
| HMH&H Metal Fabrication | St. Louis | MO | — | ◇ UNVERIFIED |
| HAH and H Metal Products, LLC | Savannah | TN | — | ◇ UNVERIFIED |
| HFHardy Frames INC | Huntington Beach | CA | — | ◇ UNVERIFIED |
| HTHarout Tool & Machine Corporation | Hackensack | NJ | — | ◇ UNVERIFIED |
| HMHarrison Machine Co/wesleyville Plt | Erie | PA | — | ◇ UNVERIFIED |
| HSHarris Sheet Metal CO. | Midland | MI | — | ◇ UNVERIFIED |
| HCHart & Cooley INC | Holland | MI | — | ◇ UNVERIFIED |
| HCHart & Cooley INC | Tucson | AZ | — | ◇ UNVERIFIED |
| HMHartzell Mfg CO INC (0857092018) | Miamisburg | OH | — | ◇ UNVERIFIED |
| HVHarvest Valley Specialties INC | Eugene | OR | — | ◇ UNVERIFIED |
| HIHarwell Industries | Oklahoma City | OK | — | ◇ UNVERIFIED |
| HFHawk Fabricators | Birmingham | AL | — | ◇ UNVERIFIED |
| HCHazleton Custom Metal Products INC. | Hazleton | PA | — | ◇ UNVERIFIED |
| HCH. C. Wade Sheet Metal Works | Martinsville | VA | — | ◇ UNVERIFIED |
| HFHdn F&a INC | Battle Creek | MI | — | ◇ UNVERIFIED |
| HFHeat Fab INC | Turners Falls | MA | — | ◇ UNVERIFIED |
 Helander Metal Spinning Company | Lombard | IL | — | ◇ UNVERIFIED |
| Helander Metal Spinning Company | Addison | IL | — | ◇ UNVERIFIED |
| HMHennemuth Metal Fabricators, INC. | Oakdale | PA | — | ◇ UNVERIFIED |
| HIHennig, INC. Marlin | Machesney Park | IL | — | ◇ UNVERIFIED |
| HSHercules Sheet Metal | Chalmette | LA | — | ◇ UNVERIFIED |
| HMHeritage Metal LLC | Tazewell | VA | — | ◇ UNVERIFIED |
