Boat Vent Collector Box - Attwood
For use with Venturi, Flush Louvered or Trimline vents. Corrosion-resistant plastic. Ventilation hose (not included) twists into the bottom of the collector box to form a raised water barrier. All collector boxes are designed for intake or exhaust and meet all ABYC requirements. For two 3" I.D. hoses. Installation Hole Size: 2-1/16" x 15-9/16". Depth: 3-7/8".