| Business | Phone |
| Aireco Supply Inc 1102 Russell St # A, Baltimore 21230 | (410) 783-9220 |
| H M Wood Electric Co 317 Church St, Baltimore 21225 | (410) 789-4457 |
| Mace Electric Inc 4001 Coolidge Ave, Baltimore 21229 | (410) 247-1595 |
| Reilly's Designs Intl Po Box 12015, Baltimore 21281 | (410) 327-2906 |
| Eastern Controls Inc 414 E Joppa Rd, Baltimore 21286 | (410) 321-7222 |
| Flow Controls Inc 7844 Belair Rd, Baltimore 21236 | (410) 882-0200 |