H-20 lids for coil pit setters from Ford Meter Box carry a load rating for up to 40,000 pounds. They are available in 15- and 18-inch sizes, with an optional bracket for encoder receiver transmitter devices. Made from reinforced composite polymer, they are durable yet provide low AMR signal interference. The H-20-rated lids are weather- and UV-resistant, and can be used for road or driveway installations. 260/563-3171; www.fordmeterbox.com.