The NDS 10 in round meter boxes and covers are injection molded of structural foam polyolefin material with a melt index between 10 to 12. Coloring and UV stabilizers are added, along with processing lubricants when needed. The 10 in round body is tapered and has a minimum wall thickness of 0.30 in. The cover seat area has eight structural support ribs on the underside of the seat, each with a minimum thickness of 1/4 in. The bottom of the body has a 1/2 in flange. The 10 in round cover has an average thickness of 0.30 in. The meter box has a 3/8 in 304 stainless steel nut for the bolt-down as a standard feature.