Bass & Hays standard 20″ locking meter box lids, available in cast gray iron, ductile iron, or HDPE plastic, are designed for durability and compatibility. These lids fit BH® 55™ TEXAS SPECIAL®, 548®, and 536™ series galvanized meter boxes, as well as BH® P55P™, P548P™, and P536P™ series plastic meter boxes. They are also compatible with the BH® 58™ meter vault access plate assembly. The BH-5PD® ductile iron lid is specifically designed for use with the BH® P55PD18™ light-duty traffic-rated meter boxes but can also fit other box styles. Note: Using a traffic-rated lid in a non-traffic-rated box or assembly, or vice versa, will affect the traffic rating. Standard lettering options are available as stock items, with special lettering available for custom orders. Proudly made in the USA, these lids are a reliable choice for utility access.