Identification of PAMREX manhole covers versions

The different versions of PAMREX manhole covers frames are identified by a letter affixed on the frame with the right of the opening box:

• E = Operation
• S = Safety (blocking of the cover with 90°)

The absence of letter indicates a safety version.

These functionalities are given only by a different geometry from the hinge box and are thus kept during a change of cover.

The form of the frame is identified by a circle or a square in the content of the opening box.

This information is useful during the cutting of the coated around the manhole cover.