This Keystone Extreme Lintel is designed for use in cavity wall construction, supporting masonry above large structural openings. Manufactured from galvanised steel, it is suitable for applications requiring a high level of load support.
Typical installations include external wall lintelling where a cavity of 130–145mm needs to be bridged. Often used in new builds or extensions, it delivers reliable support across a 2250mm span in both residential and commercial projects.
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