| Business | Phone |
| Api Inc 701 Channel Dr, Bismarck 58501 | (701) 258-9905 |
| Gagnon Inc 3825 Saratoga Ave, Bismarck 58503 | (701) 258-1276 |
| Miller Insulation 3520 E Century Ave, Bismarck 58503 | (701) 258-4323 |
| Itch-Eez Insulation 3800 Commerce St, Bismarck 58501 | (701) 255-4007 |
| J & A Insulation 247 Boeing Ave, Bismarck 58504 | (701) 250-0174 |
| Johnson Insulation 215 Airport Rd, Bismarck 58504 | (701) 255-4007 |