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Standard 555S, Edition 5

Standard for Smoke Dampers

UL Red Line
Standard 555S, Edition 5 Edition Date: August 09, 2016
Summary of Topics s0555s_5_sum.html

Summary of Topics

This revision to ANSI/UL 555S includes updates to obsolete code references. The revisions also address other miscellaneous universal upkeep of UL for Standards Safety. These revisions are considered to be non-substantive and not subject to UL's STP process.

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