Security Manhole Covers and Frames
The NAL Security Cover and Frame System is designed to provide vandal, criminal and terrorist protection for footway and carraigeway chambers. It can also be used to eliminate the risk of damage to plant caused by manhole covers falling into chambers. The Security Cover & Frame system consists of three folded steel plates which are supported on steel angles bolted to the ends of the chamber. The system can be installed into any new or retrofitted into any existing access chamber.
- Enhanced network security
- Retrofitted to any footway or carriageway chamber
- Rapid installation
- Minimal clear opening intrusion
- Hot dip Galvanised for long life
- Bespoke sizes available