| Business | Phone |
| B T Sheet Metal 508 S Caton Ave # 3, Baltimore 21229 | (410) 233-5613 |
| Excel Machine & Fabrication 1230 Ridgely St, Baltimore 21230 | (410) 576-9480 |
| Fingles Metal Works 2256 Reisterstown Rd, Baltimore 21217 | (410) 523-3300 |
| Novatec Inc 222 Thomas Ave, Baltimore 21225 | (410) 789-4811 |
| Pritchard Brown Llc 6501 Erdman Ave, Baltimore 21205 | (410) 483-5600 |
| Sessa Sheet Metal Contractors 529 N Haven St, Baltimore 21205 | (410) 327-7000 |
| Sojam 3200 Annetta Ave, Baltimore 21213 | (410) 732-7333 |
| Thomas O Best Co 631 S Brice St, Baltimore 21223 | (410) 566-4343 |
| Weaco Ornamental Iron 2142 Harford Rd # 4, Baltimore 21218 | (410) 467-1354 |