The covers in Seattle are generally made of metal

 

and are round

 

or rectangular

 

.

No colored covers were found in the city of Seattle; however, golden-toned covers do exist

 

.
The city emblem does not appear on the covers.

The covers serve various utilities, including Seattle City Light

 

(responsible for electricity supply in the area), AT&T

 

, and others.

The purpose of the cover appears on some of them: communications

 

, electricity

 

, gas

 

, etc.

Artistic covers
A municipal initiative that began in 1975, mainly in the downtown area, in which artists were invited to design manhole covers. Among the covers are artworks by the following artists: Nathan Jackson

 

, Nancy Blum

 

, Garth Edwards

 

, and Betsy Best-Spadaro

 

.

Manufacturers
Most covers do not bear the manufacturer’s name. Among the manufacturers identified are Clyde Casting

 

and D&L Foundry

 

, both manufacturers from the United States.

Standards
No certification marks were found on the covers located in the city of Seattle.