| # | Company name | Role | # of projects |
|---|---|---|---|
| 1 | Ace Glass Co., Inc. | Window installation | 1 |
| 2 | Acorn Products (Canada) Ltd. | Window installation | 1 |
| 3 | Alaska Glazing Inc. | Window installation | 1 |
| 4 | All Metro Glass | Window installation | 1 |
| 5 | ALT Cladding and Design (Taiwan) | Window installation | 0 |
| 6 | ALT Cladding and Design Hong Kong Limited | Window installation | 13 |
| 7 | Alumil Deutschland GmbH | Window installation | 0 |
| 8 | Alumil S.A | Window installation | 0 |
| 9 | Aluvisa | Window installation | 0 |
| 10 | Anderson Aluminum Corporation | Window installation | 3 |
| 11 | Anker Nielsen | Window installation | 1 |
| 12 | ARO Windows&Door | Window installation | 0 |
| 13 | Arrowall Co. | Window installation | 2 |
| 14 | Arrowall Co. | Window installation | 18 |
| 15 | Arsenal-A | Window installation | 1 |
| 16 | Arvio Sodas UAB | Window installation | 2 |