- A kit of 20 pins, intended to prevent the extraction of the cover from its frame, is available in option.

- Two metal pins located on the hinge prevent any extraction of the cover of its frame.

- This system preserves all the functionalities of the product (guiding and 90°blocking function).

- After installation, the pins can not be grasped with a tool, type grip.

- Note: This system is irreversible.

Installation

This system:

• Takes only a few minutes to be installed.
• Can be installed on a new manhole cover as well as on a manhole cover already installed (first generation), but always after the sealing of the frame.