The Catnic lintel stands out as a pioneering product, crafted with a duplex corrosion protection (DPC) system, an integrated plaster key, and a built-in damp-proof course that provides continuous insulation. This innovative lintel is a truly unique option in the market. Catnic lintels are suitable for an array of projects ranging from standard to heavy and extra-heavy-duty applications.

Cavity wall lintels - commonly used in modern construction and designed especially for use in cavity walls to support the masonry above the outer and inner leaf of the wall, ensuring the cavity integrity.

Single leaf lintels - or single wall lintels support single walls like a solid external wall or internal partitions, suitable for brick or block walls, supporting loads from a single side. Used in internal doors, windows and non-load-bearing partitions (not made from masonry).

Box lintels - hollow in shape, a box lintel is a high load-bearing support for internal blockwork walls and external solid walls. Box lintels are versatile in application and can be used as a single leaf and in cavity walls.

Timber frame lintels - support timber frame constructions. Buildings that are constructed with timber frames will depend on the timber when it comes to structural support. A lintel will provide support to the outer masonry brick or block. These lintels are not designed to carry loads from the outer to the timber frame.

Thermally broken lintels (TBLs) - featuring a thermal break, thermally broken lintels provide better thermal performance as they stop unnecessary flows of thermal energy. TBLs improve insulation and help prevent unnecessary heat loss.

At Armstrong Cheshire, we only offer products that we can trust, so we are proud to provide a full range of Catnic lintel sizes, from standard lengths to extra-long and strong sizes. We are confident that each of their products will deliver complete satisfaction, and with our service, you can have them delivered to your site with efficiency.

If you can't find the cavity steel or metal box lintel that fits your needs, don't hesitate to contact us. We will do all we can to ensure that we can source one for you. Shop our most popular Internal Box Lintels, cavity lintels, angle lintels and more.

Quick select from our most popular lintels

Internal Box Lintels

100mm Cavity Lintels

Extra Heavy Duty Cavity Lintels

Angle Lintels

Find bestselling 100mm, 150mm Catnic lintels as well as a range of Catnic lintel sizes.

The load-bearing capacity of a Catnic lintel varies depending on its size and type. Detailed load ratings can be found in the product specifications or by consulting with a structural engineer.

While it's possible to cut Catnic lintels, it's generally not recommended as it can affect their structural integrity. It's best to order lintels in the exact size required for your project.