| # | Company name | Role | # of Projects |
|---|---|---|---|
| 1 | Alcoa Architectuursystemen | window frame supplier | 2 |
| 2 | Chicago Heights Glass, Inc. | window frame supplier | 6 |
| 3 | Comar Architectural Aluminium Systems | window frame supplier | 1 |
| 4 | Esquadrias Santa Clara | window frame supplier | 3 |
| 5 | Lidco | window frame supplier | 1 |
| 6 | ProfilGruppen AB | window frame supplier | 3 |
| 7 | Simec bv | window frame supplier | 3 |
| 8 | TEHA Groep BV | window frame supplier | 2 |
| 9 | The Winslow Brothers Company | window frame supplier | 1 |