We do not stock the IG L5/50 Lintel. However, we supply the CX 50/100 Catnic Lintel, which is suitable for the same cavity size and, in many cases, offers improved performance depending on load requirements.
Both lintels are designed for 50mm cavity wall construction, but there are some important structural and performance differences to consider.
Why We Offer the CX 50/100 Instead
Although we do not stock the IG L5/50, the CX 50/100 Catnic Lintel offers:
- Greater structural flexibility
- Improved long-term durability
- Stronger corrosion resistance
- Availability across multiple load classes
- Suitability for both standard and heavier applications
In many situations, the CX 50/100 serves as a direct replacement — and often an upgrade — provided the correct load class is selected for your project.
Main Differences
| Feature | IG L5/50 | CX 50/100 Catnic |
|---|---|---|
| Cavity Size | 50mm cavity | 50mm cavity |
| Inner Leaf | Typically 100mm block | 100mm block |
| Load Capacity | Standard domestic loads | Higher load capability options |
| Steel Specification | Galvanised steel | High-grade galvanised steel |
| Corrosion Protection | Standard galvanising | Duplex corrosion protection system |
| Structural Strength | Suitable for lighter applications | Designed for heavier duty use |
| Application | Standard house builds | Residential & light commercial |
Performance & Construction Differences
Load Performance
The CX 50/100 Catnic lintel range is available in multiple load classes, meaning it can accommodate higher masonry and floor loads when required. This provides greater flexibility across different build types.
Corrosion Protection
Catnic lintels use a duplex corrosion protection system (galvanising plus protective coating), which can provide increased durability in more exposed environments compared to standard galvanised finishes.
Structural Design
The CX 50/100 features a robust steel profile engineered to deliver consistent load bearing across standard openings, helping to reduce deflection and maintain brickwork integrity over time.
Thermal Performance
Both lintels are designed to reduce thermal bridging within cavity walls. The CX range includes integrated insulation to help meet modern building regulation requirements.
Why We Offer CX 50/100 Instead
If you’re unsure about load requirements or span suitability, please contact us
