Overview

Product Information

Wall Construction
Cavity Wall
Outer Leaf
100-102
Cavity
90-105
Inner Leaf
N/A
Wall Width
Loading Conditions
Standard

Specification

Product Code Standard Length (mm) SWL (kN) Weight (kg) Nominal Height (mm)
CTJ900750 750 5 5.07 149
CTJ900900 900 5 6.08 149
CTJ901050 1050 5 7.1 149
CTJ901200 1200 5 8.11 149
CTJ901350 1350 5 9.13 149
CTJ901500 1500 5 10.14 149
CTJ901650 1650 7 13 149
CTJ901800 1800 7 14.18 149
CTJ901950 1950 7 15.37 149
CTJ902100 2100 7 16.55 149
CTJ902250 2250 7 17.73 149
CTJ902400 2400 7 18.91 149
CTJ902550 2550 7 19.71 149
CTJ902700 2700 7 20.87 149
CTJ902850 2850 7 22.03 224
CTJ903000 3000 7 23.19 224
CTJ903300 3300 7 30 224
CTJ903600 3600 7 32.72 224
  • The SWL (safe working load) is based on the total UDL (uniform distributed load) over maximum span using 150mm end bearings.
  • Standard lengths are available in 150mm increments up to 3000, 300mm increments from 3000mm to 3600mm.

Features

Standard duty steel lintels for use in thin joint masonry cavity wall construction with 102mm outer leaf. Inner leaf support is achieved through a standard Catnic box lintel and propping during construction is eliminated thanks to a unique plastic fixings connection. The CTJ range closes the cavity and removes the need for an additional cavity closer. Fully insulated, with integral plaster key and built in DPC thanks to Catnic's signature black powder coating.
  • Duplex Corrosion Protection
  • Integral Plaster Key
  • Built-In DPC
  • Integral Insulation
  • Made in the UK for a lower carbon footprint and certified to BES 6001 Responsible Sourcing standard.
  • Made using lower carbon manufacturing
  • It is possible to reuse all of our lintels, providing that they are not damaged. Contact our technical team for more information

What our customers think

Video Guides

When selecting a lintel, there are three factors that should be considered to ensure the correct specification: the type of wall construction, the dimensions of the structural opening and the total load on the lintel. In this video, we run you through the lintel selection process.

Catnic thermally broken lintel installation

Once you have chosen the correct lintel for your project, it is crucial that the lintel be installed properly – if it is not, it could lead to serious issues for the building. In this video, we explain the installation considerations for cavity wall lintels.

Builder installed Catnic CG90/100 lintel

Catnic’s Thermally Broken Lintel is the only lintel on the market to provide a complete thermal break between the inner and outer leafs. In this video, we outline the key benefits of Thermally Broken Lintels and explain the installation process.

Catnic TS90/100 lifted into position by builders

Steel lintels, and specifically Catnic's thermally broken lintels, have a significant role to play in reducing thermal bridging and achieving carbon gains. They represent one of the simplest and most economical ways for building fabric to be designed and constructed to help achieve the carbon gains necessary to meet current and future building regulations.

Catnic balcony installation at kingsdown gate

Support & FAQs

Calculating the load imposed on lintels depends on a variety of factors, including the wall type in which the lintel is installed, and whether floor or roof loads need to be accounted for in addition to masonry loads. Lintels are primarily design to support uniformly distributed loads (UDLs) but on occasions point loads also need to be considered. This guide only provides an overview of how the loads on lintel are established and should not be used as a substitute for obtaining loading calculations either direct from the lintel manufacturer or from a qualified structural engineer.

Specifying Catnic’s Thermally Broken Lintels (TBLs) will significantly improve the thermal efficiency of a property and help ensure that the project’s necessary environmental credentials are met. Specifying Catnic TBLs can be done with ease as they have the same safe working loads as Catnic’s traditional lintels – meaning TBLs can be specified like for like. Catnic TBLs can also be used for standard duty, heavy duty and extra heavy use, making them suitable for a wide range of projects. You'll find our full range here

The correct specification of lintels is crucial, however it is just as important to ensure that each one is installed correctly. Here are five top tips to ensure an trouble free installation. To watch our video on installing cavity wall lintels click here

Request a Schedule

Which product would you like to request a schedule for?

Get a Free Quote

Which product would you like to get a quote for?