CFR›Title 10›Chapter II›Part 431›Subpart S›Subject Group Energy Conservation Standards ContainsSection 431.326CorpusDaily eCFRDisplayed edition2026-05-07Last updated2026-05-07 Sections 431.326 § 431.326 Energy conservation standards and their effective dates. Previous 431.322 § 431.322 Definitions concerning metal halide lamp ballasts and fixtures. Next Test Procedures Test Procedures