MH Square Frame Base w/ Circular Cover (401.01)


Manufactured by Sigma Corporation
Brand: Calcutta Ferrous

Heavy duty, load bearing, grey cast iron square frame and circular cover for maintenance access. Cover stamped "Danger", "Storm", "Sanitary", or "Water" as per application.

Categories: 
Drainage and Sewer Works | Maintenance Hole, Catch Basin, Ditch Inlet Units and Valve Chambers | Accessories | Frames and Covers | Gray Cast Iron

Certifications: PMC - Accepted for Use Durham Region Approved Products List Region of Halton Prequalified Products List

Prequalification Lists: 
Regional Municipality of Durham - 4.70.50.16 - Grey Cast Iron (PDF)
Regional Municipality of Halton - 4.70.53.30 - Frames and Covers (PDF)
Regional Municipality of Halton - 7.95.86.30 - Frames and Covers (PDF)
  • Ontario Provincial Standards
    • OPSD 401.010 - Cast Iron, Square Frame With Circular Closed Or Open Cover For Maintenance Holes
  • American Society for Testing and Materials
  • Other Standards