Attwood 1364A3 Cowl Ventilator

Can be used with any standard 3″ ventilation hose. Features flexible hose flange that is screwed into hose, then snaps into the flange. The neck extends 1″ below deck. Die cast Zamak with perma-plate chrome finish. Flange is non corrosive plastict. installs with #8 fasteners. Size: 6″L x 5-8/16″W x 2-1/4″H. Hole Size 3-1/4″ to 3-1/2″ dia.