CB150 Cavity Wall Steel Lintel

The Birtley CB150 Cavity Wall Steel Lintel is a heavy-duty structural lintel designed to provide reliable load-bearing support over door and window openings in wide cavity wall construction. Manufactured by Birtley, a leading UK specialist in steel lintels, the CB150 is engineered for applications where greater cavity widths and higher structural loads are present.

Designed to suit 100 mm inner leaf and 100 mm outer leaf masonry with an extended cavity, the CB150 ensures efficient load distribution across both leaves of the wall. Its galvanised steel construction offers excellent resistance to corrosion, making it suitable for long-term use in external wall applications. The CB150 is commonly specified for larger openings in new-build housing, extensions and light commercial developments where enhanced structural performance is required.

Key Features

• Birtley CB150 cavity wall steel lintel

• Designed for 100 mm inner leaf / 100 mm outer leaf masonry

• Suitable for wide cavity wall constructions

• Heavy-duty structural performance

• Galvanised steel for long-term corrosion resistance

• Provides dependable support over doors and windows

Typical Applications

• Door and window openings in wide cavity walls

• Brickwork and blockwork inner and outer leaves

• New-build housing and extensions

• Residential and light commercial construction

• Projects requiring increased load-bearing capacity

Performance & Workability

• Effectively distributes masonry loads across both wall leaves

• Designed for higher load conditions than standard cavity lintels

• Compatible with standard masonry and mortar systems

• Straightforward installation using traditional construction methods

• Suitable for use in accordance with building regulations

Technical Specification

• Product Type: Steel Cavity Wall Lintel

• Manufacturer: Birtley

• Model: CB150

• Material: Galvanised Steel

• Inner Leaf Width: 100 mm

• Outer Leaf Width: 100 mm

• Application: Door and Window Openings

Why Choose the Birtley CB150 Steel Lintel?

The Birtley CB150 Cavity Wall Steel Lintel provides a robust and reliable solution for supporting masonry over openings in wide cavity wall constructions. With its heavy-duty design, corrosion-resistant finish and proven Birtley manufacturing quality, it is a trusted choice for professional builders and contractors working on demanding structural applications.