The Birtley 900mm Cavity Wall Lintel CB50 is a high-quality, durable construction component designed to support masonry above door and window openings. Made from pre-galvanised mild steel, this lintel is engineered to distribute loads evenly for reliable load bearing. Its robust construction guarantees a long lifespan, while its 900mm length makes it suitable for a wide range of building applications. Whether youre constructing a new build or refurbishing an existing property, the Birtley 900mm Cavity Wall Lintel CB50 ensures stability and safety.