MH Square Frame w. Circular Cover - Model 401.01
Manufactured by Govind Steel Company Ltd.
Manhole, square frame with circular cover for drainage and sewer works, catch basins.
City of Hamilton -
- OPSD 401.010 Type A and B
Ontario Provincial Standards
OPSD 401.010 - Cast Iron, Square Frame With Circular Closed Or Open Cover For Maintenance Holes
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
Wolseley Waterworks Group