Description
IG L1 S 150 Steel Lintel
The IG L1 S 150 is a galvanised steel cavity wall lintel designed for standard duty applications within 150–165mm cavity walls. Manufactured from galvanised mild steel, this lintel provides structural support above door and window openings while maintaining corrosion resistance and long term durability. The design supports load distribution across both masonry leaves within standard cavity wall construction.
Specifications
| Product type | 150mm cavity lintel |
| Range | IG Standard Load Cavity Wall Lintel |
| Material | Galvanised mild steel |
| Cavity width | 150–165mm |
| Outer leaf | 102mm |
| Inner leaf | 100mm |
| Height range | 86–194mm |
| Thickness range | 1.8–3.2mm |
| Length options | 900mm, 1200mm, 1500mm, 1800mm, 2100mm, 2400mm, 2700mm, 3000mm |
| Load capacity | Up to 26kN (3:1) and 20kN (19:1) |
| Finish | Standard galvanised coating |
| Product codes | L1S1501200, L1S1501500, L1S1501800, L1S1502100, L1S1502400, L1S1502700, L1S1503000, L1/S1500900 |
Key design features
The IG L1 S 150 is designed specifically for 150–165mm cavity wall construction with support across both masonry leaves. Multiple length options from 900mm to 3000mm allow the lintel to suit a range of structural openings. The galvanised steel construction provides corrosion resistance while maintaining manageable installation weight.
Benefits
- Galvanised steel construction provides long term corrosion resistance.
- Supports standard cavity wall masonry construction.
- Wide range of lengths allows flexibility across different openings.
- Lightweight profile assists with handling and installation.
- Suitable for residential and light commercial building projects.
Applications
This 150mm cavity lintel is used above door and window openings within cavity wall construction. It is suitable for housing developments, extensions, and light commercial projects where dependable masonry support is required across medium sized structural openings.
Explore more
Explore the full range of steel lintels to find alternative cavity wall lintels, load capacities, and structural support solutions.
Contact us
For help selecting the correct lintel or confirming suitability for your project, contact the team for technical advice and UK wide supply.





