COVER,JUNCTION BOX - (US)
A cover containing facilities for mounting directly on a JUNCTION BOX. It may have provisions for the insertion and/or mounting of electrical devices, such as switches, connectors, additional covers, and jewels. It may include the jewel(s). For covers having facilities for mounting on brackets or on current carrying devices such as switches and receptacle connectors, see PLATE, WALL, ELECTRICAL. See also COVER, CONDUIT OUTLET.