GRATING LOCK

The grating lock is a locking unit to be used for manholes, communication cable boxes (C.C. Boxes) and common ducts. It is protected against dirt and rainwater because it is installed in the ground on which people walk around. It is effectively used for manholes to prevent them being removed by heavy rain or mischief, or to prevent accidents of dropping into a manhole or use in terrorism.

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GRATING LOCK

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