Birtley Cavity Wall Lintels 2400 x 290mm (L x W) Galvanised is manufactured from mild steel, is very strong due to the low amount of‚ carbon. It‚ has a density of 248 pounds per cubic inch. This is used‚ in construction because of its ductility and malleability. It is sued with cavity tray on external walls. The cavity wall reduces the weights on the foundation and gives better thermal insulation. This does not allows the moisture content to enter because of the hollow space between leaves. It c

Brand Name	Birtley