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Heavy Duty Wall Lintel

Cavity: 50-65mm 

Wide Inner Leaf: 125-140mm

Outer Leaf: 100mm

Must have a solid, fully jointed blockwork infill to inner leaf.



  • Birtley has the only complete range of steel lintels manufactured from structural grade steels: S275JR/S355JR to EN10025- 2:2004 
  • Lack of baseplate and factory fitted insulation reduces thermal bridging
  • Supergalv coating offers superior life expectancy


Length 750-3000 3150-3900
L (kN) 35 25
W (kg/m) 13.6 13.6
H (mm) 156 156

(L) Load SWL/UDL value (W) Weight (H) Height 

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Brand Birtley
Generic Ref HD50/130
Product Range Cavity Wall Lintels
Product Sub-range 50-65mm Cavity Wide Inner Leaf
Product Type Heavy Duty Cavity Wall Lintel - 100mm Outer leaf/125-140mm Inner Leaf
European Standard/ETA BS EN845-2:2013+A1:2016
Test Standard EN846-9:2000/2016
Notified Body Lucideon Ltd (NB 1289)
Material Mild Steel S275JR to BS EN10025-2:2004
Coating/Finish/Colour 65µm Hot Dip Galvanized to BS EN ISO 1461:2009
Thermal Performance Contact us for information
Insulation Expanded Polystyrene - BREEAM rating A+
Fire Rating 60 mins (with 2 coat plaster finish)
1. Installation requirement Bed fully on bricklaying mortar
2. Installation requirement Must be used with a cavity tray - External walls only
3. Installation requirement Not suitable for point loads or concrete floors
4. Installation requirement 150mm Minimum end bearing
Sales Qty 1
Packaging weight 0
1. Features Supergalv coating offers superior life expectancy
2. Features Post-fabrication galvanizing leaves no surface with inferior paint protection
3. Features Lack of baseplate and factory fitted insulation reduces thermal bridging
4. Features Structural grade steel to EN10025
5. Features Wide inner leaf to suit 125-140mm block
Option 1 Alternative material options: Ultragalv coating (150µm), Stainless Steel 1.4301 (304)
Option 2 Outer Leaf Options: Reduced length flange (RFF), No rainwater drip (ND), Render mesh (MF)
Option 3 Inner Leaf Options: No plaster key (NM), Closer plate (CP)

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