Birtley CB90 Cavity Wall Standard Duty Lintel 1200 mm Weep Vents Extra large head helps prevent

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

Designed to prevent the transmission of radon

4-didgt resettable combination lock with 10000 possible combinations

16 packs per pallet

Compatible with 320mm spout

Birtley CB90 Cavity Wall Standard Duty Lintel 1200 mm Weep Vents Extra large head helps preventStandard 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