The Keystone steel box lintel is intended for supporting masonry above door and window openings in both internal and external walls. Manufactured from galvanised steel, it suits wall thicknesses ranging from 100 mm to 215 mm, making it adaptable for different construction needs on residential or commercial sites.
This lintel features a length of 1800 mm and a depth of 150 mm, providing adequate coverage and strength for standard building openings. Perforations along the unit are designed to assist plaster adhesion, helping to achieve a clean internal finish after installation.
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