Birtley Heavy Duty Cavity Lintel 70mm HD70 climaflex Durability: Our 9x3 timber joists

Durability: Our 9x3 timber joists are not only robust but also treated with the highest quality tanalisation process

The bricks come in packs of 500

Multi-Purpose: Suitable for a wide range of construction tasks

rich black colour for elegant contrast

Birtley Heavy Duty Cavity Lintel 70mm HD70 climaflex Durability: Our 9x3 timber joistsThe Birtley Heavy Duty Cavity Lintel 70mm HD70 is the best choice for heavy duty cavity wall support. Custom made to accommodate cavities ranging between 70mm and 65mm with 100mm outer and inner leaf respectively, this HD70 lintel can withstand the toughest construction demands. To maximise its effectiveness, it is important that the inner leaf is fitted with solid, fully jointed blockwork infill. The 70mm heavy duty lintel with Supergalv coating