1500mm Catnic CG70/100 Cavity Wall Lintel

Catnic Cougar CG70 Open Back Cavity Wall Standard Duty Lintel – 1500mm

The Catnic Cougar CG70 Open Back Cavity Wall Standard Duty Lintel – 1500mm (CG70/100) is a reliable structural steel lintel designed to deliver dependable support over door and window openings in cavity wall construction. Engineered for standard duty applications, this lintel is suitable for use in walls with a cavity width of 70mm–85mm and outer/inner leaf masonry thicknesses typical of UK residential and light commercial builds.

Manufactured from galvanised steel and finished with a tough powder coating, the Catnic Cougar lintel offers excellent resistance to corrosion and long-term performance on site. The open-back profile allows continuous build-up of both the inner and outer masonry leaves, ensuring even load distribution and straightforward installation — making it suitable for brickwork, blockwork, and fair-faced inner leaf masonry.

This lintel features an integrated insulation core that helps reduce cold bridging across the cavity wall, contributing to improved thermal performance of the building envelope. It also includes a built-in damp proof course (DPC) and an integral plaster key , which help streamline site installation and finishing, reducing the need for additional materials and labour.

With its 1500mm span, this Catnic Cougar lintel is ideal for medium-sized window openings, standard doorways, and a wide range of typical cavity wall apertures, offering dependable structural support while supporting energy efficiency.

Key Features

Catnic Cougar open-back cavity wall lintel designed for standard duty support

Galvanised steel construction with powder-coated finish for corrosion resistance

Open-back profile allows continuous inner and outer leaf masonry build-up

Integrated insulation core reduces cold bridging

Built-in damp proof course (DPC) enhances moisture protection

Integral plaster key simplifies internal finishing work

Suitable for residential and light commercial cavity wall construction

Specifications (Standardised Format)

Product Name: Catnic Cougar Open Back Cavity Wall Standard Duty Lintel

Length: 1500mm

Cavity Width Compatibility: 70mm – 85mm

Material: Galvanised steel with powder-coated finish

Profile Type: Open back cavity wall lintel

Insulation: Integrated thermal insulation core

Built-in Features: Damp proof course (DPC) and plaster key

Application: Structural support over door and window openings in cavity walls

Installation: Continuous inner and outer leaf masonry build-up

Typical Use: Residential new builds, extensions, renovations and light commercial projects

Applications

Support for medium-span window openings in cavity walls

Doorway lintel support in residential masonry construction

Extensions and refurbishment projects

Brickwork and blockwork cavity wall systems