This NDS 13" x 24" x 12" meter box and cover are injection molded of structural foam polyolefin material with a melt index between 10-12. Coloring and UV stabilizers are added, along with processing lubricants when needed. The 13" x 24" body is tapered and has a minimum wall thickness of 0.27". The body has a double wall at the top cover seat area with a minimum thickness of 0.27". The cover seat area has 18 structural support ribs on the underside of the seat, each with a minimum thickness of 0.250". The bottom of the body has a 1" flange. The 13" x 24" cover has an average thickness of 0.32". The meter box has a 3/8" 304 brass nut for the bolt-down as a standard feature.