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The Catnic CN71A Standard Duty External Solid Wall Lintel 2700mm is a galvanised steel box lintel designed to provide structural support above openings in solid masonry walls. Suitable for external walls measuring 200–215 mm thick, this Catnic lintel offers dependable load-bearing performance in residential and light commercial construction. Manufactured from galvanised steel with a protective black powder-coated finish, it provides strong corrosion resistance and long-term durability. The rigid box profile helps prevent twisting during installation and can support wet masonry loads during construction. With a nominal height of 143 mm and a safe working load of approximately 20 kN, it is suitable for window and door openings.