The original Bass & Hays standard BH-5PD® Lid, a 20" ductile iron locking meter box lid labeled "WATER METER," is a durable and versatile stock item designed for secure utility access. Made from coated ductile iron that meets ASTM A536 or better standards, this lid is suitable for light-duty traffic applications when used with the P55P™ D18 (with ductile iron ring) and properly installed in reinforced concrete. It is compatible with BH® 55™, 548®, and 536™ series galvanized meter boxes,