Popular with many boat builders, this black ABS vent is corrosion resistant and will not discolor.
The contemporary, horizontal louvered design adds a clean look to any boat. For 3" or 4" I.D. ventilation system. Installs with #8 screws (not included). Sized for installation even on highly-contoured decks.
This venturi vent grill was typically mounted to a collector box that held 3" or 4" blower hoses.
Overall outside dimensions: 17-9/16" long 2-3/4" tall Extends 11/16" from the hull
