
7.5. VENTILATORS
7.5.1 Stationary roof ventilators are gravity
type, manufactured from 24 gauge galvanized steel in which all
welds, soldered seams, rivets and fasteners are clean, tight, and
secure. Ventilators feature seamless spun caps which are leak
proof. Straight through drainage eliminates clogging by airborne
debris. Mounting jack matches roof slope. Vents utilize negative
air pressure through a 14" throat as an operating principle.
Overall width of vent is 22" and height 10-1/2", not including
mounting jack dimension. Power ventilation can be added before or
after installation by adding fan section.