Birtley HD150 1200mm – Heavy Duty Cavity Wall Lintel

The Birtley HD150 1200mm is a robust heavy-duty cavity wall lintel engineered for exceptional load-bearing performance and durability. Constructed from structural grade mild steel S275JR and featuring a Supergalv coating, this lintel is designed to withstand harsh environmental conditions while providing superior corrosion protection. It is ideal for professional builders and DIY enthusiasts who are working on structural projects requiring reliable and sturdy support.

This lintel is compatible with cavity widths of 150-165 mm and offers a load capacity of 70 kN for lengths ranging from 750 to 1800 mm. Its lightweight design at 15.4 kg/m makes handling and installation straightforward, allowing for efficient project completion. Additionally, the lintel is insulated with Expanded Polystyrene to improve thermal performance, achieving a BREEAM rating of A+.

Specifications

Type: Heavy Duty Cavity Wall Lintel
Length: 1200 mm
Cavity Width: 150-165 mm
Outer Leaf Thickness: 100 mm
Inner Leaf Thickness: 100 mm
Material: Structural grade mild steel S275JR
Coating: Supergalv (post-fabrication galvanising)
Fire Resistance: 60 minutes (tested to BS 476-20:1987)
Thermal Performance: Insulated with Expanded Polystyrene, BREEAM rating A+
Installation Requirement: Solid, fully jointed blockwork infill to inner leaf
Manufacturer: Birtley
Height: 231 mm
Weight: 15.4 kg/m

Key Features

• Heavy-duty construction for superior support
• Corrosion-resistant Supergalv coating
• Load capacity of 70 kN
• Fire resistance of 60 minutes
• Insulated for improved thermal performance