4" Square Boxes and Extensions - 2-1/8” Deep
4" Square Boxes and Extensions - 2-1/8” Deep
Material：Galvanized Steel
Application：These 4"square boxes with conduit knockouts are installed in walls or ceilings for lighting fixtures, switches, receptacles or other outlet devices. Square boxes are used to bring power to a number of electrical devices where multiple conductor runs are split in two or more directions.
Advantages：4S Boxes can be surface or flush mounted when multidirectional conduit runs are necessary.
Field Names: 4S box, 1900 box, 1900 electrical box, 1900 junction box, conduit box, J-box, concentric box, conduit junction box, outlet box, drywall mud box, conduit J box, conduit outlet box, deep 1900 box, deep 4S box, deep plenum box, 3/4”plenum box, Chicago plenum junction box, 1900 deep box, 1900 deep plenum box,1900 deep combo box.
UL File No：E526989(ZQ53171-SUB not UL listed)
