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Standard 268A, Edition 4

Smoke Detectors for Duct Application

UL Standard
Standard 268A, Edition 4 Edition Date: December 11, 2008 ANSI Approved: August 18, 2020 $505.00-$1,258.00

Revisions and Related Documents

Revisions
Red Line Std. (6)

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August 18, 2020 Redline Revision
August 12, 2016 Redline Revision
October 02, 2014 Revision
September 25, 2009 Revision
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CSDS
Proposals (7)

CSDS Proposal   

CSDS Proposals

An electronic document associated with a UL Standard for Safety or Outline of Investigation, and issued by UL to propose:

  • A revision of a single or multiple requirement(s).
  • A complete new edition of an existing Standard or Outline.
  • A new Standard or Outline that has not previously been published.

CSDS Proposals provide access to view the proposal and submit comments within UL's Collaborative Standards Development System (CSDS) appropriately.

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May 23, 2022
May 29, 2020
April 24, 2020
July 01, 2016
January 21, 2016
August 01, 2014
May 08, 2009
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UL LLC CRD (0)

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Other Updates (2)

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Bulletin   

Bulletins

These bulletins are not used in CSDS. These are announcement and report type bulletins.

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Summary of Topics (SOT)
April 23, 2014 View
April 23, 2009 View
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Referenced Standards (0)

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Reverse Referenced Standards (1)

UL 268A is referenced in the following list of UL Standards

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