16 CFR 460.6
§ 460.6 “Representative thickness” testing.
United States · 16 CFR — Commercial Practices · Status: effective
Cite this
- Citation
- 16 CFR 460.6, § 460.6 “Representative thickness” testing, United States, version 1 as recorded 2026-07-09, yourstate.us, https://yourstate.us/provision/64566
- Permanent ID
ys:prov:64566@1- SHA-256
60658a028efc65680af676b85955574c0b9be9b674105a4a648fe2e16afd2272
The hash is SHA-256 of this version's text, with every run of whitespace collapsed to a single space and the ends trimmed. The ID always leads back here, and checking it says whether the text you cited is still the current version.
Full text
All tests except reflective insulation tests must be done at a representative thickness for every thickness shown in a label, fact sheet, ad, or other promotional material. “Representative thickness” means a thickness at which the R-value per unit will vary no more than plus or minus 2% with increases in thickness. However, if the thickness shown in your label, fact sheet, ad, or promotional material is less than the representative thickness, then you can test the insulation at the thickness shown.
Legislative history
This is a federal regulation, adopted through agency rulemaking under the Administrative Procedure Act — not enacted by a recorded vote of Congress.