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7 x 5 grid cut from 2mm aluminium has a scalloped edge to the grid and is 40mm x 40mm

7 x 6 grid, aluminium 2mm, brass 1.2mm and copper 1.2mm have a straight edged grid and are 40mm x 45mm

7 x 5 Wallet insert grid cut from 1.5mm aluminium has a straight edge to the grid and is 50mm x 80mm