The covers in Prague are made of metal

 

, concrete

 

, or plastic (composite materials)

 

. They come in circular

 

, rectangular

 

, oval

 

, and square

 

shapes. Additional shapes can also be found, such as a cover designed in the form of a window with an arched top

 

.

Some of the gas covers are painted in bright colors, although the paint appears to have been applied after the covers were manufactured

 

. In addition, several gold-colored covers have also been found in Prague

 

.

Covers intended for the City of Prague usually bear the city’s coat of arms

 

, as do covers belonging to municipal-related organizations, such as the gas company PRAŽSKÁ PLYNÁRENSKÁ

 

.

In many cases, the purpose of the cover is not indicated. In other cases, gas covers are identified by the word GAZ

 

, PLYN

 

, or a flame symbol

 

. Sewer covers bear the word KANALIZACE

 

, drainage covers are characterized by their drainage slots

 

, and water covers are marked with the letter W

 

or the word VODA

 

.

The year of manufacture is generally not indicated.

Prague also has covers installed on walls rather than in the ground

 

,

 

.

Manufacturers
The covers are manufactured by the Czech company KASI

 

, the French company PAm

 

, the Danish company AVK

 

, and other manufacturers.

Standards
The international standard EN 124

 

and its associated load classes (B125-F900)

 

appear on many covers.

Other standards found on Prague’s covers include the Czech ČSN standard

 

, the Czech TZÚS certification

 

, the German DIN standard

 

, and others.