Steel Lintel 1500mm KEYSTONE S/K90 For 90 – 105mm Cavity

Info

The Keystone S/K-90 1500mm Steel Lintel is a standard-duty cavity wall lintel specifically designed to provide reliable structural support over door and window openings in masonry cavity walls. Manufactured from high-grade galvanized steel, this lintel is corrosion-resistant and engineered for long-term durability, making it an excellent choice for both residential and light commercial construction projects.

This lintel is suitable for use in cavity walls with a cavity width between 90mm and 105mm. It features an integrated CFC-free polystyrene insulation core, which significantly enhances the thermal performance of the wall and helps meet modern building regulation requirements for energy efficiency.

With a total length of 1500mm, the S/K-90 lintel spans medium-width openings while supporting masonry loads from both the outer and inner leaf of a cavity wall. The outer leaf typically comprises 102mm brickwork, while the inner leaf is constructed from 100mm blockwork. Its U-shape profile with integral insulation helps maintain a continuous insulation barrier across the cavity, reducing cold bridging.