American Polymer Company Legacy Series 24" x 36" x 24" grade-level underground hand hole enclosure assembly molded from polymer concrete, configured with Tier 22 performance, bolt-down security hardware, EMS marker, and drop-in logo marking plate. The unit consists of a box (body) and cover with bolt-down hardware. Bodies are rated to ANSI/SCTE 77 Tier 22 and covers are dual-rated to Tier 15 and Tier 22; overall unit performance is determined by the lowest-rated component. Built with high-quality aggregates and a proprietary cross-linked resin system for increased strength, freeze/thaw durability, and chemical resistance.