The manhole covers in Mumbai are made of metal or concrete , though plastic (composite) covers also exist.
Their shapes include rectangular , round , or square forms.

In most cases, it is not known which utility the covers belong to, nor can their specific function usually be determined. In the few cases where it is indicated, a telephone icon or the name of a telecom provider appears on communication covers, the word SEWER on sewage covers , and so on.

In most cases, the covers are not particularly distinctive and usually feature a background of squares or diamonds .

Manufacturers
In most cases, the manufacturer’s name does not appear on the covers. In the few cases where it does, they are Indian manufacturers: Everlast , Neco , Thermodrain , and others.

Standards
Standards markings are generally absent. On covers where they do appear, one can find various load classes (B125–D400) , the British standard BS497 , the Indian standard IS 1726 , and the Indian certification ISI .