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The Birtley CB90 Steel Lintel is a high-quality standard duty cavity wall lintel designed to provide reliable load-bearing support over door and window openings in cavity wall construction. Manufactured by Birtley, a trusted name in steel lintels, the CB90 offers strength, durability and long-term performance for residential building projects.
Designed to suit 100 mm inner leaf and 100 mm outer leaf masonry, the Birtley CB90 Steel Lintel ensures effective load distribution across both leaves of the cavity wall. Its robust galvanised steel construction provides excellent resistance to corrosion, making it suitable for use in external wall applications. Ideal for standard duty loads, the CB90 is commonly used in new-build housing and extensions where dependable structural support is required.
Birtley CB90 standard duty steel lintel
Suitable for 100 mm inner leaf / 100 mm outer leaf cavity walls
Designed for standard residential load conditions
Galvanised steel for corrosion resistance
Provides reliable support over doors and windows
Manufactured to high quality standards
Door and window openings in cavity wall construction
Brickwork and blockwork inner and outer leaves
New-build housing and extensions
Residential construction projects
Standard cavity wall applications
Effectively distributes masonry loads across both wall leaves
Designed for standard duty structural performance
Compatible with standard masonry and mortar systems
Straightforward installation using traditional construction methods
Suitable for use in accordance with building regulations
Product Type: Steel Cavity Wall Lintel
Manufacturer: Birtley
Model: CB90
Duty Rating: Standard Duty
Inner Leaf Width: 100 mm
Outer Leaf Width: 100 mm
Material: Galvanised Steel
Application: Door and Window Openings
The Birtley CB90 Steel Lintel offers a reliable and cost-effective solution for supporting masonry over openings in standard cavity wall constructions. Backed by Birtley’s proven manufacturing quality, it is a trusted choice for builders and contractors delivering compliant, durable residential buildings
