PDA

View Full Version : Fire dampers in Exhaust Duct


thehoodguy
01-07-2009, 11:40 PM
Just wondering if anyone remembers when the code changed dissallowing fire dampers in Non UL listed ducts and duct systems.
Sparkplug101
04-02-2009, 09:50 AM
It was in the atter part of the 90's. fire hazard as the dampers would collect grease and not close