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Eintrag vom: 01.11.2013.

Section 21A requirements are specifically applicable to fiber woven material used as gaskets in grease duct assemblies. The methods described and defined in this section are in lieu of Section 21 Tensile Strength Elongation and Change in Volume Tests of Gaskets and Seals. See standard for details.

 

UL 1978 - Grease Ducts Please note: All interim revisions for this edition available at time of your purchase will be included.

 

This revision of ANSI/UL 1978 dated October 11 2021 is being issued to update the title page to reflect the most recent designation as a Reaffirmed American National Standard (ANS).

 

UL Standard for Safety Grease Ducts ? Fourth Edition; Reprint with Revisions Through and Including October 11 2021 standard by Underwriters Laboratories 12/13/2010

 

UL 1978 | UL Standards & Engagement | UL Red Line | Edition 4 | Grease Ducts | Published Date: October 11 2021 | ANSI Approved: October 11 2021

 

UL 1978 - Grease Ducts Please note: All interim revisions for this edition available at time of your purchase will be included.

 

This revision of ANSI/UL 1978 dated October 11 2021 is being issued to update the title page to reflect the most recent designation as a Reaffirmed American National Standard (ANS). No technical changes have been made.

 

UL 1978 - Grease Ducts Please note: All interim revisions for this edition available at time of your purchase will be included.

 

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).