Manufacturer's Description:
Use with one dual-feed remote transformer (isolating connectors included).
INSTALLATION
This product can mount to either a 4" square electrical box with round plaster ring or an octagon electrical box (not included).
OTHER INFORMATION
For use with a dual-feed remote transformer (sold separately).The
shortest rigid standoff that can be used with a MonoRail dual-feed canopy is the 2" rigid standoff (sold separately). If dropping the rail more than 2" below the ceiling, order the desired rigid standoff length and two compatible power extenders (sold separately).