SC Heating Practice Questions - South Carolina Heating Contractor Examination Exam

They may be used as supply-air plenums in exterior walls They shall not be used as a plenum for supply air, shall not be part of a required fire-resistance-rated assembly, shall not convey air from more than one floor, and shall not be used in exterior-wall cavities of the building envelope They may connect unlimited floor levels if smoke detectors are added later Gypsum on one face is enough to use any exterior stud bay as a supply chase