These thru-hulls are made with a durable, thermoplastic construction which prevents electrolysis. Caution: Thru-Hull connectors are designed for installation above the water line only. Fits Hose Size : 3/4" I.D. Max. Hull Thickness : 1-1/4" Flange Diameter : 1-3/4" Installation Hole Size : 1-1/8" Material : Polypropylene
Attwood Thru-Hulls, Thermoplastic Resins - 3/4"