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Description IG Standard Duty Cavity Wall Lintel L1/S130 – Suitable for 100mm inner and outer leaf construction with cavity sizes ranging from 130-145mm. Key Features Installation: Blockwork must be built tight against the inner face of the lintel. Ensure the mortar bed is placed on top of the blockwork before floor units are laid to guarantee even load distribution. Propping: Steel lintels may be propped to facilitate faster construction. This lintel provides robust structural support while allowing efficient installation practices to enhance construction speed.