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👉 Check Latest PriceDescription The CB70/130 is a medium-duty cavity wall lintel designed for constructions with a 70-85mm cavity and a wide inner leaf measuring between 125-140mm . This lintel is ideal for cavity wall applications but not suitable for point loads or concrete floors . Key Features: Cavity Size: 70-85mm. Inner Leaf Width: 125-140mm. Outer Leaf Width: 100mm. Supergalv Coating: Post-fabrication galvanizing provides superior corrosion protection, with up to 50% more zinc coverage. Fire Resistance: Compliant with BS 476-20:1987, offering 60 minutes fire rating when used with a two-coat plaster finish. Material: Manufactured from Mild Steel S275JR, complying with BS EN10025-2:2004 standards.