Technical Bulletin 2020-01 was provided for implementation of WINDOW 7.7.10 / THERM 7.7.10. Beginning September 14, 2020, WINDOW7.7.10 / THERM7.7.10 (hereinafter referred to W7.7 / T7.7) will be the only approved software for NFRC 700 ratings for new certifications, re-certifications, or revisions/addendums.
Clarification is being provided for shading systems which require use of W7.7 / T7.7.
1.- Beginning March 13, 2020, all ratings for shading system product options shall be simulated using W7.7 / T7.7. This includes blind options that require use of the CGDB. Blinds in the up and stacked position using THERM may be rated using either W7.4 / T7.4 or W7.7 / T7.7 until the sunset date.
2.- Reissues of product certification simulation reports shall be handled in the following manner:
- Reissues containing only a company and/or product name change may continue to the certification expiration date and require no update.
- Reissues that include new simulated product options, may continue to use W7.4 / T7.4 until the sunset date, except for certifications using shading systems requiring use of the CGDB.
- If new simulated product options containing shading systems are added to the reissued report, the shading system options requiring use of the CGDB shall be rated using W7.7 / T7.7.
- After the sunset date, all new simulated product options added to the reissued report shall use W7.7 / T7.7.
If you have any questions concerning the information in the
, please contact Kevin Louder at 240-821-6538; email: