40 CFR § 211.211 - Compliance with labeling requirement.

---
identifier: "/us/cfr/t40/s211.211"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 211.211 - Compliance with labeling requirement."
title_number: 40
title_name: "Protection of Environment"
section_number: "211.211"
section_name: "Compliance with labeling requirement."
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "G"
subchapter_name: "NOISE ABATEMENT PROGRAMS"
part_number: "211"
part_name: "PRODUCT NOISE LABELING"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
regulatory_source: "44 FR 56127, Sept. 28, 1979, unless otherwise noted."
cfr_part: "211"
---


# 211.211 Compliance with labeling requirement.

(a) All hearing protective devices manufactured after the effective date of this regulation, and meeting the applicability requirements of § 211.201, must be labeled according to this subpart, and must comply with the Labeled Values of mean attenuation.

(b) A manufacturer must take into account both product variability and test-to-test variability when labeling his devices in order to meet the requirements of paragraph (a) of this section. A specific category is considered when the attenuation value at the tested one-third octave band is equal to or greater than the Labeled Value, or mean attenuation value, stated in the supporting information required by § 211.204-4, for that tested frequency. The attenuation value must be determined according to the test procedures of § 211.206. The Noise Reduction Rating for the label must be calculated using the Labeled Values of mean attenuation that will be included in the supporting information required by § 211.204-4.

[47 FR 57717, Dec. 28, 1982]