| Business | Phone |
| Brauer Supply Co 330 S Newstead Ave, St Louis 63110 | (314) 534-7150 |
| Pargreen Sales Engineering 3470 Hampton Ave # 1048, St Louis 63139 | (314) 481-3358 |
| Oleander Properties 7730 Carondelet Ave # 106, St Louis 63105 | (314) 725-9900 |
| King Filtration Technologies 1255 Research Blvd, St Louis 63132 | (314) 432-8441 |
| Fluid-Air Products Inc 12834 Gravois Rd, St Louis 63127 | (314) 729-7000 |
| Filter Renewal Technologies 10850 Galt Industrial Blvd, St Louis 63132 | (314) 423-5266 |
| Commair Inc 315 N Laclede Station Rd, St Louis 63119 | (314) 963-0057 |
| Don Air Filter Sales 8517 Olive Blvd, St Louis 63132 | (314) 997-0357 |