| Business | Phone |
| Young & Bertke Air Systems Co 2118 Winchell Ave, Cincinnati 45214 | (513) 241-5566 |
| Controls & Sheet Metal 971 Ohio Pike, Cincinnati 45245 | (513) 943-8550 |
| Johnstone Supply 1212 Dalton Ave, Cincinnati 45203 | (513) 651-2665 |
| Johnstone Supply 1640 E Kemper Rd, Cincinnati 45246 | (513) 772-2665 |
| Merman Sheet Metal Inc 3717 Jonlen Dr, Cincinnati 45227 | (513) 272-5540 |
| Met-L-Fab Inc 7235 Shawnee Run Rd, Cincinnati 45243 | (513) 561-4289 |
| Metal Technology Systems 24 Landy Ln # 5a, Cincinnati 45215 | (513) 563-1882 |
| Prime Source Metal Works 1020 Laidlaw Ave, Cincinnati 45237 | (513) 242-9900 |