Rounding off R-values.
16 C.F.R. § 460.11
in effectEffective: 2024-07-01R-values shown in labels, fact sheets, ads, or other promotional materials must be rounded to the nearest tenth. However, R-values of 10 or more may be rounded to the nearest whole number.
Source: eCFRURL: https://www.ecfr.gov/api/versioner/v1/full/2024-07-01/title-16.xmlFetched: 7/26/2026
