Designed for air intake or for cabin ventilation when used in conjunction with a dorade box. Great for bilge ventilation with or without a blower. Constructed of dip molded PVC, these low-profile cowl vents are ideal for applications where a taller vent would foul lines or restrict crew movement. Includes snap-on deck plate and cover for use in rough weather. UV resistant. White with a traditional red interior. Color White/Red Size 2-3/4" Dia. x 3-1/2" H Hole 3-1/4"