A centrifugal upblast exhauster is secured to a prefabricated galvanized roof curb using non-ferrous screws, with flashing and counter flashing provided at the roof penetration. A backdraft damper is installed within the exhaust duct, which terminates at the bottom of the steel framing and is covered with hardware cloth.
SECURE FAN TO CURB WITH NON FERROUS SCREWS FLASH AND COUNTER FLASH BACKDRAFT DAMPER EXHAUST DUCT. PRE-FAB GALVANIZED CURB FIN ROOF BIRDSCREEN CENTRIFUGAL UP-BLAST EXHAUSTER TERMINATE AT BOTTOM OF STEEL WITH HARDWARE CLOTH COVER.
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