| Business | Phone |
| Puritan Manufacturing Inc 1302 Grace St, Omaha 68110 | (402) 341-3753 |
| Olson Brothers Inc Sheet Metal 2651 Saint Marys Ave, Omaha 68105 | (402) 341-2360 |
| Hempel Sheet Metal Works Inc 1255 S 13th St, Omaha 68108 | (402) 341-4305 |
| Masters Sheet Metal Co 915 S 40th St, Omaha 68105 | (402) 348-1812 |