Section: F-7 520750-1 Seadog 3/4" Thru Hull White Plastic Fitting Manufacturer: Sea-Dog Part Number: 520750-1 / 5207501 Condition: New Quantity: 1 Cross References: SDG 5207501, 50-3518, 2175-7601, 21757601, 520750 These Thru-Hulls are ideal for salt water use because they are impervious to electrolysis and corrosion. For use with hose to allow water to pass in or out of a vessel. Designed for drainage above the water line. Constructed of injection molded polypropylene. Attributes A 1-13/16" B 1/2" C 1-11/16" D 3-1/2" E 1" F 3/4"