The Keystone Cavity Lintel S/K-90 3000mm is a high-performance structural building component engineered for superior load-bearing capacity. Designed to bridge openings in the construction of doors, windows, or gaps in brick or blockwork, this lintel guarantees robustness and durability. Manufactured by Keystone, a reputable brand synonymous with quality and reliability, it is made with galvanised steel for corrosion resistance and long-lasting performance. The S/K-90 3000mm model features a special design that makes it suitable for cavity wall constructions.