Attwood Thru-Hulls

Made from thermoplastic resins, these thru-hulls offer durability and heavy-duty construction while preventing electrolysis. Made of thermoplastic resins Plastic Thru-Hull Connectors are designed for installation above the water line only 3872-3 Fits Hose Size: 5/8" I.D. Stem Length: 3-1/4" Max Hull Thickness: 1-1/4" Flange Diameter: 1-3/4" Installation Hole Saw Size: 1-1/8" Construction: Polypropylene 3873-3 Fits Hose Size: 3/4" I.D. Stem Length: 3-1/4" Max Hull Thickness: 1-1/4" Flange Diameter: 1-3/4" Installation Hole Saw Size: 1-1/8" Construction: Polypropylene 3874-3 Fits Hose Size: 1-1/8" to 1-1/4" I.D. Stem Length: 3-1/4" Max Hull Thickness: 1-1/4" Flange Diameter: 2-1/4" Installation Hole Saw Size: 1-3/8" Construction: Polypropylene 3875-3 Fits Hose Size: 1-1/2" I.D. Stem Length: 3-1/2" Max Hull Thickness: 1-1/4" Flange Diameter: 3" Installation Hole Saw Size: 1-7/8" to 2" Construction: Polypropylene