Birtley CB90 Cavity Wall Standard Duty Lintel 1200 mm Weep Vents 4-didgt resettable combination lock with

4-didgt resettable combination lock with 10000 possible combinations

Extra large head helps prevent roofing membrance from pulling off the nail

Compatible with 320mm spout

Designed to prevent the transmission of radon

Birtley CB90 Cavity Wall Standard Duty Lintel 1200 mm Weep Vents 4-didgt resettable combination lock withStandard duty cavity wall lintel manufactured from structural grade steel Cavity: 90 mm 105 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