Birtley CB70 Cavity Wall Standard Duty Lintel 1500 mm Brick Reinforcement External trays are used when

External trays are used when you start laying from an external corner of a building

carbon dioxide and methane gases in tanking applications or where hydrostatic pressure is present

For underground water tap

Inner and outer leaves must be suitably tied

Birtley CB70 Cavity Wall Standard Duty Lintel 1500 mm Brick Reinforcement External trays are used whenStandard duty cavity wall lintel manufactured from structural grade steel Cavity: 70 mm 85 mm Outer Leaf: 100 mm Inner Leaf: 100 mm 60 minute fire rating with 2 coat plaster finish Lack of baseplate and factory fitted expanded polystyrene insulation reduces thermal bridging Not suitable for point loads or concrete floors Loading SWL UDL Value: 15 kN