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Standard 555, Edition 7

Standard for Fire Dampers

UL CSDS Proposal
Standard 555, Edition 7 Edition Date: October 10, 2008
Summary of Topics b0555_7_20081010_sum.html

Subject 555

Bulletin Dated: October 10, 2008


The following topics for the Standard for Fire Dampers, UL 555, are being recirculated:

1. Addition of Test Procedure for Fire Dampers Installed Outside the Fire Wall Plane

2. Addition of Multiple Section Rapid Closure Dynamic Damper Testing

3. Revision of Cycling Test

Back to Standard 555, Edition 7

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