Oldcastle Infrastructure (Oldcastle Polymer) polymer concrete hand hole assembly with a nominal 24" x 36" footprint and 36" depth. Tier 22 rated. One-piece polymer concrete cover secured with 3/8" x 16 stainless steel hex head bolts; supplied with a 2" x 8" marking plate. Polymer concrete construction for high strength at low weight; field-modifiable with standard power tools.