ISO Approved 4X2" Square Extension Box Without Bottom

Without Bottom square extension box

For surface-mounted wiring.
Made of Pre-Galvanized steel.
It is primarily used for switches, outlets, or as a junction box & is most commonly used in exposed work or surface mounted wiring applications.
It can in stalled in wall or ceiling for lighting fixtures, switches, receptacles or other outlet devices,square box are used to bring power to a number of electrical devices where multiple conductor runs are split into two or more directions.
Rectangular box without bottom and Octagonal box without bottom are also available