Birtley CB70 Cavity Wall Standard Duty Lintel 2100 mm Underground Drainage Heat loss reduced due to

Heat loss reduced due to continuous seal around trap door

paint and mortar splashes during building and refurbishment work whilst the door remains fully operational

metals and other materials

3 mm outer thread diameter

Multi-use wipes effective on hands

Birtley CB70 Cavity Wall Standard Duty Lintel 2100 mm Underground Drainage Heat loss reduced due toStandard 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: 20 kN