# Protection of Stratospheric Ozone: Revision to References for Refrigeration and Air Conditioning Sector To Incorporate Latest Edition of Certain Industry, Consensus-Based Standards
> **Rule** · Direct final rule. · Published 2017-12-11 · Effective 2018-03-12 · 82 FR 58122
## Document
- **Document number:** 2017-26085
- **Category:** air-emissions
- **Federal Register citation:** 82 FR 58122
- **CFR reference:** 40 CFR 82
- **Publication date:** 2017-12-11
- **Effective date:** 2018-03-12
- **EPA docket:** EPA-HQ-OAR-2017-0472
## Abstract

The U.S. Environmental Protection Agency (EPA) is taking direct final action to modify the use conditions required for use of three flammable refrigerants, isobutane (R-600a), propane (R-290), and R-441A, in new household refrigerators, freezers, and combination refrigerators and freezers under the Significant New Alternatives Policy (SNAP) program. The use conditions, which address safe use of flammable refrigerants, are being revised to reflect the incorporation by reference of an updated standard from Underwriters Laboratories.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2017/12/11/2017-26085/protection-of-stratospheric-ozone-revision-to-references-for-refrigeration-and-air-conditioning)
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