Jun 8, 2016 #1 fayazdin1 Mechanical Feb 14, 2012 30 0 0 PK Hi Friends, I am working on a retirement center. It is a Type II construction where ceilings are 1-hour rated. The building is fully sprinklered. Do I need fire-rated diffusers? Please guide Thanks Fayaz
Hi Friends, I am working on a retirement center. It is a Type II construction where ceilings are 1-hour rated. The building is fully sprinklered. Do I need fire-rated diffusers? Please guide Thanks Fayaz