Filters, Strainers, Perforated Sheet Metal. Robin J. Green Ltd  Unit 5,  Bartlett Mews, Pen Mill Trading Estate,  Yeovil,  Somerset.  BA21 5HR Tel: 01935 425400   Fax: 01935 433311   Mobile: 0771 4654354 Part Number                Hole size           Pitch              % Open area            Sheet size            Thickness PERFORATED BRASS SHEET  22B                          0.80mm            1.50mm                     26                    1.22M x 0.40M            0.45mm 40B                           1.50mm            2.49mm                     33                    1.22M x 0.61M            0.55mm 42B                           1.50mm            2.49mm                     33                    1.22M x 0.61M            0.90mm 55B                           3.18mm            4.75mm                     40                    1.22M x 0.61 M           1.60mm 80B                         12.70mm          17.50mm                     48                    1.22M x 0.61M            0.56mm STAINLESS STEEL 304 STAINLESS STEEL 316 MILD STEEL ALUMINIUM COPPER