SB100 Internal Wall Box Lintel

The Birtley SB100 Internal Wall Box Lintel is a lightweight structural lintel designed to provide reliable support over door openings in internal load-bearing walls. Manufactured by Birtley, a trusted UK specialist in steel lintels, the SB100 is specifically engineered for internal applications where efficient load distribution and ease of installation are required.

Designed for use within internal masonry walls, the SB100 box lintel supports brickwork and blockwork above openings while maintaining a compact, boxed profile. Its galvanised steel construction offers durability and long-term protection against corrosion, making it suitable for internal building environments. Ideal for new-build housing and refurbishment projects, the SB100 provides a practical and cost-effective lintel solution for internal wall openings.

Key Features

• Birtley SB100 internal wall box lintel

• Designed for internal load-bearing walls

• Lightweight boxed steel profile

• Galvanised steel for durability and corrosion resistance

• Provides reliable support over internal door openings

• Easy to handle and install on site

Typical Applications

• Internal door openings

• Load-bearing internal masonry walls

• Brickwork and blockwork construction

• New-build housing and refurbishment projects

• Residential and light commercial buildings

Performance & Workability

• Provides effective load-bearing support internally

• Box lintel design offers strength with reduced weight

• Compatible with standard masonry and mortar systems

• Straightforward installation using traditional building methods

• Suitable for use in accordance with building regulations

Technical Specification

• Product Type: Internal Wall Box Lintel

• Manufacturer: Birtley

• Model: SB100

• Material: Galvanised Steel

• Application: Internal Wall Door Openings

Why Choose the Birtley SB100 Internal Wall Box Lintel?

The Birtley SB100 Internal Wall Box Lintel offers a dependable and easy-to-install solution for supporting masonry over openings in internal walls. Its lightweight design, corrosion-resistant finish and trusted Birtley quality make it a reliable choice for builders and contractors working on internal construction projects.