The common thickness of lead glass is 10mm 12mm 15mm 18mm 20mm.10 mm corresponds to 2 lead equivalents, 12 mm is 2.5 lead equivalents, 15 mm is 3 lead equivalents, 18 mm is 4 lead equivalents, and 20 mm is 4.5 lead equivalents.More than 20mm thick can be customized. Generally, 3-4 lead equivalent...