
FR-31B Single U-frame / dovetail foundation
The CONTECH® FR‑31B single U‑frame / dovetail foundation is a high‑strength deck fitting engineered to deliver reliable and durable container securing on board all types of cargo vessels. Welded directly onto the deck structure, this robust foundation features a 45° dovetail profile designed for smooth and secure engagement with our bottom twistlocks B‑45, B‑45LL, and B‑46, ensuring precise locking of container corner castings during loading, sailing, and discharge.
AA-2C, DF-31, FE-03-1, I-22-E, F597-1, D5A-FF-45,