100x75x10 GALVANISED LINTEL (FACE BRICK)

Arch bars are similar to Gal angles but 10mm thick, as opposed to 6mm.
150 x 100 x 10 weight is 18 kg plm
100 x 75 x 10 weight is 22.5 kg plm

Used over openings under heavier load. Often used to span greater openings than traditional gal lintel, which only goes to 4000.
Also available in 150x100x10mm, in lengths of 1800, 2100, 2400, 2700, 3000, 3300, 3600, 4000, 4500, 5100, 5500, and 6000.