Catnic External Solid Wall Steel Lintel - CN71A

This lintel is specifically designed for use in external solid wall applications. It is not intended for cavity walls.

Duplex Corrosion Protection refers to the lintel being manufactured from galvanised steel and then further enhanced with a powder-coated finish. This two-layer system provides superior resistance against corrosion and extends the product's lifespan.

Yes, a key feature of this lintel is its design to carry a full load of wet masonry as soon as it is installed, allowing for immediate progress in construction.

The Catnic CN71A Lintel is suitable for outer leaves measuring between 200mm and 215mm.

This standard duty lintel can carry loads up to 29kN and is suitable for spanning up to 2700mm, provided it has a minimum of 150mm end bearings at each side.

Yes, the Catnic CN71A Lintel features both integral insulation and a built-in DPC, contributing to thermal efficiency and moisture protection for the wall.

The box profile design provides inherent strength and rigidity, which helps the lintel resist twisting during the masonry build-up process, ensuring a more stable and straightforward installation.

Yes, it is available in standard lengths up to 3000mm in 150mm increments, and also in 300mm increments between 3000mm and 3600mm, offering flexibility for various opening sizes.

The box profile is designed to resist twisting. Ensure the lintel is installed perfectly level on a stable bed of mortar and that the minimum 150mm end bearings are fully supported. Overloading beyond its 29kN standard duty capacity or insufficient bearing can cause issues. Check the masonry above is evenly distributed.

The Catnic CN71A features Duplex Corrosion Protection, consisting of galvanised steel beneath a powder-coated finish. This dual-layer protection offers robust resistance to rust and environmental exposure. No specific ongoing treatment is generally needed. If the protective coating is significantly scratched or damaged before installation, it should be addressed to maintain full protection.

Verify that the total load (including masonry, floor loads, roof loads, etc.) does not exceed the lintel's standard duty capacity of 29kN. Also, confirm that the span is within the maximum specified (2700mm) and that the minimum 150mm end bearings are correctly implemented on stable masonry. Incorrect bearing length or excessive load are common causes of support issues.