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
- No resale value - theft deterrent
- Environmentally friendly - made with recycled materials
- Design with a distinctive appearance of standard ecological signs
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:
- 2. Half-moon wedge to facilitates opening with a bar
- 5. AASHTO H-25 designation
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