| | Contractor | Address | Phone |
| HAFSC | Beckerle Consultants, Inc. |
1645 Headland Dr, Fenton, MO
| 636-305-1600 |
| HAFSC | Fireco Inc. |
11316 S Natoma Ave, Worth, IL
| 708-671-9386 |
| HAFSC | Firestopping Specialists |
1100 Wittman Dr, Menasha, WI
| 920-722-1280 |
| HAFSC | Northwest Firestop |
6419 Monroe Street, Sylvania, OH
| 419.517.4777 |
| HAFSC | Superior Industrial Insulation Company |
3855 West 150th St, Cleveland, OH
| 216-252-9590 |