The official Belvedere Window Energy Rating (WER) simulations have been carried out using the 50mm Outerframe.
We reserve the right to amend technical specifications without prior notification. Further information about WER's can be found on the official BFRC Website.
A Rated Specification
Neutral Plus Glass/ Warm Edge Spacer / Low Iron Glass
Argon Gas Filled
B Rated Specification
Neutral Plus Glass / Warm Edge Spacer / Clear Glass
Argon Gas Filled
C Rated Specification
Neutral Plus Glass / Aluminium Spacer / Clear Glass
Argon Gas Filled
We reserve the right to amend technical specifications without prior notification. Further information about WER's can be found on the official BFRC Website.
