Attwood White Plastic Thru-Hull Fitting — 1-1/8" Inner Diameter provides a corrosion-resistant, above-waterline connection for boats and DIY projects. Crafted from polypropylene, it resists electrolysis while delivering a dependable seal on hulls up to 1-1/4" thick.
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Material: Polypropylene construction for durability and corrosion resistance
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Color: White to blend with most hulls
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Hose Size: 1-1/8" inner diameter (standard hose compatibility)
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Stem Length: 3-1/4" for above-waterline installation
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Max Hull Thickness: Up to 1-1/4" thick
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Flange Diameter: 2-1/4" for a secure seal
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Installation Hole Size: 1-3/8"
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Drain Plug: 7/8" plug supports drainage or venting as part of maintenance
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Installation Note: Designed for installation above the water line only
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Manufacturer: Attwood Marine
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Part Number: 3874-3
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UPC: 022697387431
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Ideal For Hulls Up To: 1-1/4" thick
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Compatibility: Standard 1-1/8" hose sizes
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Electrolysis Resistance: Designed to resist electrolysis for a long-lasting seal
This thru-hull fitting provides a sturdy, electrolysis-resistant connection designed for above-waterline installation, helping maintain a reliable seal on hulls up to 1-1/4" thick. The white finish blends with most hulls, and the 7/8" drain plug supports practical drainage or venting as part of a straightforward maintenance routine. Its polypropylene construction and standard hose compatibility make it a practical upgrade for boats requiring a durable, above-waterline thru-hull connection.
