| Representative | Address | City | State | Zipcode | Telephone |
| JOHNSTONE SUPPLY/BILLINGS/#20 | 5253 SOUTHGATE DRIVE | BILLINGS | MT | 59101 | 406-252-1207 |
| REFN SUPP DIST/BILLINGS MT/(BIL) | 108 MOORE LN | BILLINGS | MT | 59101 | 406-259-0300 |
| THERMAL SUPPLY/BILLINGS MT | 546 S 18TH ST W SUITE 'A' | BILLINGS | MT | 59102 | 406-651-4600 |
| THERMAL SUPPLY/GREAT FALLS MT | 100 COMMERCIAL AVE | GREAT FALLS | MT | 59405 | 406-727-0647 |
| REFN SUPP DIST/GREAT FALLS MT/(GRF) | 601-605 THIRD AVE SO | GREAT FALLS | MT | 59405 | 406-727-9080 |
| JOHNSTONE SUPPLY/MISSOULA/#167 | 734 HOLMES | MISSOULA | MT | 59801 | 406-542-1418 |
| THERMAL SUPPLY/MISSOULA MT | 1345 DAKOTA ST. | MISSOULA | MT | 59801 | 406-728-9199 |