The @Wahoo Docks Dock Bench is available for 2 or 3 person seating

Aluminum Three Person Bench Seating - Metal Craft Docks

This Patriot Bench Kit is designed to be universal and to work on most docks. The Bench has a 4' wide frame and is made of aluminum for durability and to prevent rusting. The kit includes two H framing supports and two aluminum uprights. The seat and back are maintenance-free aluminum to last you a lifetime. Plus, it has the desired Dock-TopTM panels, which are added for the seat and back.

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