Sea-Dog 3373161 Flush Hose Vent, 3" Hose, A: 2-13/16", B: 2-3/4", C:3-11/16", D:5/16" ,Hose/ Hole Size : Up to 3", White

Flush Thru Vents are designed for cabin or bilge ventilation. Constructed of UV resistant injection molded ABS. For use with 3” exhaust hose. Installs with four #8 FH fasteners (not included). Avoid contact with acetone or strong solvents.