90° Rectangular Rail Base – AISI 316 Stainless Steel

This 90° rectangular rail base is engineered to securely mount handrail stanchions on decks, platforms, or gunwales. Crafted from AISI 316 stainless steel, it offers superior resistance to rust and pitting, even in harsh marine environments. The rectangular flange sits flush against the surface and contains four countersunk mounting holes for easy installation with screws or bolts. The base accommodates standard rail tube diameters of 22 mm (7/8") and 25 mm (1"), making it versatile for a range of railing systems on sailboats, motorboats, and yachts. Use the 22 mm variant for smaller boats and sections (e.g. runabouts, RIBs, or sailboats up to ~6 m) where lighter railings are common. Choose the 25 mm variant for larger vessels (e.g. 6–10 m boats or above) or wherever a sturdier, thicker railing is needed. This base’s 90° upright design provides excellent stability for guardrails and lifelines, keeping passengers safe. Installation is straightforward – simply bed the base with marine sealant and fasten with stainless screws. Once installed, it forms a rigid, wobble-free connection between the deck and the railing post. With its mirror-polished finish, the base not only performs under pressure but also adds a professional, sleek appearance to your boat’s railing. Whether you’re outfitting a new vessel or upgrading older fittings, this rectangular 90° rail base delivers long-term reliability, making it a preferred choice for boat owners and builders who demand quality.