| Business | Phone |
| Natexs Sheet Metal 52 Miller St, Toronto M6N 2Z9 | (416) 653-5031 |
| Nichol's Sheet Metal Works 783 Dupont St, Toronto M6G 1Z5 | (416) 532-9696 |
| Star Sheet Metal Mfg Co 1575 Dundas St W, Toronto M6K 1T9 | (416) 532-4049 |
| Canadian Rogers Eastern Ltd 108 Vine Ave, Toronto M6P 1V7 | (416) 762-7211 |
| Cheko, L 16 Saunders Ave, Toronto M6R 1B8 | (416) 261-0765 |
| City Sheet Metal Ltd 532 Eastern Ave, Toronto M4M 1C7 | (416) 469-4565 |
| De Franco & Neill Sheet Metal 6 Geary Ave, Toronto M6H 2B3 | (416) 534-8311 |