Knock Out

What is Knock Out

Definition of Knock Out in Construction

The term knock out is used in many different circumstances in construction. In most cases, the term is used to indicate a knock out panel that is purposely located to accommodate the need to easily knock out a piece of material, for a future installation or some other requirement. In the electrical trade, the use of knock outs is very common in the sides of junction boxes, panel boxes and other electrical products, to enable the electrician to only knock out the openings necessary to accommodate their needs. Knock out panels are also installed in some types of catch-basins and manholes to enable the site contractor to knock out the proper areas of the side walls to accommodate the required piping.