Earlier editions: 2022 2019

606.1 Smoke Dampers — 2025 California Mechanical Code

California Mechanical Code (Title 24, Part 4) · 2025 edition · updated 2026-09-25 · California

CBSC: official editions, supplements and errata

Italicized text is a California amendment to the model code, as printed in the official publication.

Cite as: 2025 California Mechanical Code (Title 24, Part 4) § 606.1 · Effective January 1, 2026 · Official source: Building Standards Commission

Smoke dampers shall comply with UL 555S, and shall be installed in accordance with the manufacturer’s installation instructions where required by the California Building Code or California Residential Code .

Explained in plain English

Guides that cite this section.

Which dampers are required and what standards apply (fire, smoke, ceiling radiation)?

Get a plain-English answer with a citation back to this text.

Ask AI about this code

Export this section

▸Contents — California Mechanical Code (Title 24, Part 4)

California Mechanical Code (Title 24, Part 4)

GoCodebook provides public access, search, citation, multilingual explanation, and practical interpretation of legally adopted building regulations. It is not a substitute for the official ICC or California code publications.