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.
For use with Venturi, Flush Louvered or Trimline vents. Corrosion-resistant plastic.
> For one 4" I.D. hose
> Hole Size: 2-1/8" x 15-5/8"
> Depth: 5"
> For use with Attwood Vents BC-3764 (1494, 1423, 1424, 1496A)
PRODUCT NUMBER: FO-3413