| Business | Phone |
| Aa-1 Hepner Filter Sales & Svc 3011 Henninger Rd, Cleveland 44109 | (216) 351-4200 |
| Dayton Reliable Air Filter 135 E 211th St, Cleveland 44123 | (216) 731-3499 |
| Environmental Sales Inc 26100 Broadway Ave, Cleveland 44146 | (440) 232-6210 |
| Filter Engineering Corp Cleveland 44121 | (216) 691-0488 |
| Process Filtration Cleveland 44133 | (440) 230-2222 |
| Johnson Equipment Co 6160 Halle Dr, Cleveland 44125 | (216) 447-5010 |
| Multi Tec Filters 4130 Bradley Rd, Cleveland 44109 | (216) 749-4336 |