Keystone wall plate
Encyclopedia
Keystone wall plates are primarily used in commercial and industrial buildings to cleanly attach telecommunication cables to a junction box
Junction box
An electrical junction box is a container for electrical connections, usually intended to conceal them from sight and meter tampering. A small metal or plastic junction box may form part of an electrical conduit wiring system in a building, or may be buried in the plaster of a wall, concealed...

, surface mount box, or a mud ring mounted in the drywall
Drywall
Drywall, also known as plasterboard, wallboard or gypsum board is a panel made of gypsum plaster pressed between two thick sheets of paper...

 of a building. Keystone wall plates are made to work with many different types of cabling solutions including: coaxial, twisted pair, HDMI and fiber optic.

Keystone wall plates are made with rigid high quality plastic and have one to twelve ports. A keystone port is a hole in the wall plate which allows the insertion of a keystone module
Keystone module
A keystone module is a standardized snap-in package for mounting a variety of low-voltage electrical jacks or optical connectors into a keystone wall plate, face plate, surface-mount box, or a patch panel....

 or other male or female cabling connectors.

The most common colors of keystone wall plates in commercial and industrial settings in North America are beige and white. It is common practice not to have multiple colors of wall plates in the same room for aesthetic reasons.

Keystone wall plates are commonly made to be compatible with NEMA
Néma
Néma is a town in southeastern Mauritania, close to the border with Mali. It is located at around . It is the capital of Hodh Ech Chargui Region and of the Néma Department....

standard openings and boxes.

Further reading

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