PLASTIC MANHOLE COVERS                                     
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Plastic Manhole Security Covers​

This is a heavy duty polyethylene manhole security cover manufactured by SITMA in accordance with AASHTO Standards for H-25. 

The cover complies with the following specifications:

  • ASTM D2734, ASTM D543-06, ASTM D2584, AASHTO M-306

The cover has the following features:

  • Plate system for soil or sediment desolution in urban environments
  • Tipping system that ensures a perfect coupling between the lid and the lower perimetric rim lip
  • Very economical
  • No resale value - theft deterrent 
  • Environmentally friendly - made with recycled materials
  • Design with a distinctive appearance of standard ecological signs
  • 5 YEAR WARRANTY

The Locking Device:

  • The Locking Device consists of galvanized bolt that requires a special key of unique fabrication for ease of opening/closing
  • The Locking Device prevents unauthorized access and entry to manholes
  • The Locking Device components operate vertically remaining in the cover preventing the bolts to be lost

The cover has the following components:

  • 1. Anti-theft Lock
  • 2. Half-moon wedge to facilitates opening with a bar
  • 3. 7-8" thread bolt 
  • 4. Client name and logo 
  • 5. AASHTO H-25 designation


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