# Efficient Windows Collaborative

- Headquarters: United States


## Customers, suppliers and deals

- [National Fenestration Rating Council](https://endata.com/companies/47953.md): acquired by, 1×, latest 2020-06-17

## Announcements (2)

- 2021-06-23: [NFRC acquires Efficient Windows Collaborative](https://endata.com/announcements/59270-nfrc-acquires-efficient-windows-collaborative) (Acquisition)
- 2020-06-17: [NFRC acquires Efficient Windows Collaborative](https://endata.com/announcements/49361-nfrc-acquires-efficient-windows-collaborative) (Acquisition · United States)

---
Data from Endata (https://endata.com/). Announcements are summarized from public sources and may be incomplete; check the linked originals.