OPSD 401.01 (A/B) – Square Frame with Circular Closed/Open Cover
OPSD 401.030 – Square Frame with Circular Watertight Cover
OPSD 403.010 – Galvanized Steel Honeycomb Grate for Ditch Inlets
Maintenance holes convey sewer and storm water while maintaining water quality. We carry standard OPS Maintenance Holes in a 1200mm and 1500mm dia.
Components such as risers, tapered tops and flat caps are available to bring your structure to grade. Aluminum steps, gaskets and swift lifts are also available.