Attwood Cowl Ventilator

<p><strong>Cowl Ventilator</strong></p><p>Attwood hull-mounted vents are designed to install by fastening as a complete unit from either inside or outside the hull. Ventilation hose (not included) twists into the bottom of the box to form a raised water barrier. Plastic vents are corrosion-resistant, will not discolor. All collector boxes and vents are designed for intake or exhaust and meet ABYC H-2 cross sectional area requirements.</p><p>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 screws.</p><p>Installation Hole Size: 3-1/4" to 3-1/2"</p><p><img src="https://productimageserver.com/prop65/6pt.png" alt="Warning" /><strong>WARNING:</strong> This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to <a href="http://P65Warnings.ca.gov">P65Warnings.ca.gov</a>.</p> <!--- cis2:mm5sl5hm --->