| Business | Phone |
| Abell Engineering & Mfg 50 S Parker Ave, Indianapolis 46201 | (317) 687-1174 |
| Aero-Fab 604 E Legrande Ave, Indianapolis 46203 | (317) 787-1322 |
| B & B Welding Co Inc Indianapolis 46226 | (317) 546-9742 |
| Bo-Mar Industries Inc 221 S Franklin Rd, Indianapolis 46219 | (317) 899-1240 |
| Brad Snodgrass Inc 1930 S State Ave, Indianapolis 46203 | (317) 783-3181 |
| Bright Sheet Metal 4212 W 71st St, Indianapolis 46268 | (317) 291-7600 |
| C & C Sheet Metal Llc 1400 Sunday Dr, Indianapolis 46217 | (317) 783-1871 |
| C H Krauss Llc 2346 S Lynhurst Dr, Indianapolis 46241 | (317) 247-4355 |
| Campbell Ventilation Inc 1544 Kennington St, Indianapolis 46225 | (317) 636-7211 |
| Citadel Architectural Products 3131 N Franklin Rd # A, Indianapolis 46226 | (317) 894-9400 |
| Custom Models Inc 400 S Ritter Ave, Indianapolis 46219 | (317) 356-0026 |
| Eagle Magnetic Co 7417 Crawfordsville Rd, Indianapolis 46214 | (317) 297-1030 |
| Eikenberry Auxiliary Systems 2916 Bluff Rd, Indianapolis 46225 | (317) 788-1622 |
| Hoover Sheet Metal Co 1337 Montcalm St, Indianapolis 46202 | (317) 631-1022 |
| Indiana Metal Fabricating Inc 5902 E 34th St # R, Indianapolis 46218 | (317) 545-2500 |
| Tarpenning-La Follette Co 404 W Gimber St, Indianapolis 46225 | (317) 780-1500 |
| Thomco 1414 Sadlier Circle West Dr, Indianapolis 46239 | (317) 359-3539 |
| Staab Sheet Metal Inc 2720 S Tibbs Ave, Indianapolis 46241 | (317) 241-2553 |
| Southwark Metal Mfg Co 10401 E 59th St, Indianapolis 46236 | (317) 823-5300 |
| Sechrest Sheet Metal 1311 E 9th St, Indianapolis 46202 | (317) 634-2249 |
| Sheet Metal Models Machine Co 2702 National Ave, Indianapolis 46227 | (317) 783-1303 |
| Siegrist Heating Air Cond 3915 Kentucky Ave, Indianapolis 46221 | (317) 856-6481 |
| R E Ferguson & Assoc Inc 1501 W Ohio St, Indianapolis 46222 | (317) 635-2762 |
| Prescott Corp 1595 E Epler Ave, Indianapolis 46227 | (317) 783-0814 |
| Modern Heating Rescue Rootter 1837 N New Jersey St, Indianapolis 46202 | (317) 925-8905 |
| Mouron & Co Inc 1025 Western Dr, Indianapolis 46241 | (317) 243-7955 |
| Metafab Inc 226 Lincoln St, Indianapolis 46225 | (317) 638-6576 |
| Metal Arc Inc 513 National Ave, Indianapolis 46227 | (317) 786-9593 |
| Metal Masters 2514 Bethel Ave, Indianapolis 46203 | (317) 780-1864 |
| Metal Solutions Inc 5756 Churchman Ave, Indianapolis 46203 | (317) 781-6734 |
| Loyal Manufacturing 1121 S Shortridge Rd, Indianapolis 46239 | (317) 359-3185 |
| Mac Sheet Metal 802 N Sherman Dr, Indianapolis 46201 | (317) 634-4761 |
| Langsenkamp Manufacturing 8816 Corporation Dr, Indianapolis 46256 | (317) 585-1950 |
| Lauck Manufacturing Co 735 Bacon St, Indianapolis 46227 | (317) 787-6269 |
| K P Enterprises 8460 W Washington St, Indianapolis 46231 | (317) 244-4999 |
| Kirk & Blum Mfg Co 3501 W Kelly St, Indianapolis 46241 | (317) 244-3383 |
| Indy Sheet Metal 8813 Robbins Rd, Indianapolis 46268 | (317) 872-2783 |