Collector Box For Venturi, Flush or Trimline Vents... Instalation size 2-1/16" x 15-9/16". Depth 3-7/8".
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.