The covers in Neuilly-sur-Seine are usually made of metal

 

and are rectangular

 

or square

 

in shape.
Some covers can be found with shapes that differ from the usual designs

 

.
At times, circular covers intended for sidewalks are surrounded by a square frame, which greatly facilitates the paving work around them

 

.

No colored or gilded covers were found in Neuilly-sur-Seine, nor were any covers bearing city emblems found.

The names of the cover users/utility companies do not appear on the covers, and their purpose is also usually not indicated.

Manufacturers
Some covers bear the manufacturer’s name: the French manufacturer Norinco

 

or the American EJ Group (which acquired Norinco)

 

.

Standards
The most common standards are the European EN124 standard

 

and its various load classes (B125 - D400)

 

. In addition, the British Kitemark standard

 

can also be found.