Aug 25, 2005 #1 24121965 Mechanical Aug 25, 2005 3 0 0 NG Is fire dampers required to be installed in a 100% fresh air application?
Aug 25, 2005 1 #2 GMcD Mechanical Dec 20, 2004 399 0 0 CA If the duct penetrates a fire rated wall, then yes, a fire damper is required. Upvote 0 Downvote