Round Cast Iron Grates Code Measurements (all sizes in mm)NOTE: All Round Cast Iron Grates are 8mm thick 1RCIG150 150 ROUND 1RCIG175 175 ROUND 1RCIG200 200 ROUND 1RCIG230 230 ROUND 1RCIG250 250 ROUND 1RCIG300 300 ROUND 150 ROUND CAST IRON GRATE