Marine City 3.25” Nylon Thru-Hull Fitting, Stainless Steel Trim & Rubber Flapper

The Marine City 3.25” Nylon Thru-Hull Fitting with 316 Stainless Steel Trim is built for reliable marine drainage and corrosion resistance in challenging saltwater conditions. Constructed from premium marine-grade nylon, this thru-hull fitting withstands prolonged exposure to harsh environments while maintaining strength and durability.

The mirror-polished 316 stainless steel trim cover not only enhances the fitting’s aesthetics but also provides superior corrosion resistance compared to standard stainless steel. The built-in rubber flapper prevents water backflow, improving safety and efficiency for onboard drainage systems.

Designed for quick installation, this fitting requires no complex mounting or additional screws. Its precision dimensions ensure a secure and professional fit for 1.5-inch hose connections in boats, yachts, and other marine vehicles.

With a head diameter of 3.25 inches, thread diameter of 2.20 inches, hull thickness capacity of 2.5 inches, and total length of 4.75 inches (excluding trim cover), this thru-hull fitting delivers a reliable, long-lasting solution for marine drainage systems.

Key Features

• High-quality marine-grade nylon construction

• Mirror-polished 316 stainless steel trim cover for durability & aesthetics

• Integrated rubber flapper prevents backflow

• Fits 1.5-inch hose

• Quick-install design – no mounting or screws required

• Corrosion-resistant for saltwater environments

• Ideal for boats, yachts, and marine vehicles