ATTWOOD COWL VENTILATOR

For use with 3" I.D. wire-supported ventilation hose. Features flexible hose flange that is screwed onto hose, then vent snaps onto the flange. Vent constructed of chrome-plated die-cast Perma-Plate ZAMAK. Flange is non-corrosive plastic. Installs with #8 fasteners. 5-5/16"W x 6"L x 2-1/4"H.