OUC - 400.010 MH/CB Square Frame with Square Overflow Flat Grate, Herring Bone Opening
Distributed by Ontario Utility Castings Inc.
Cast Iron, Square Frame With Square Flat Grate For Catch Basins, Herring Bone Openings & Overflow
Ontario Provincial Standards
OPSD 400.010 - Cast Iron, Square Frame With Square Overflow Type Dished Grate For Catch Basins, Herring Bone Openings
OPSS 1850 - Frames, Grates, Covers and Gratings
OPSS 407 - Maintenance Hole, Catch Basin, Ditch Inlet and Valve Chamber Installation
American Society for Testing and Materials