Southwire Garvin 6 Inch Floor/Ceiling Flange Malleable Iron (FF600) Tier8 Lutron Diva 24VDC 30Ma 0-10V backorder1428 Maximum Overall Length 5 RCD111I

Lutron Diva 24VDC 30Ma 0-10V Single-Pole Dimmer Black (DVTV-BL)

and the 3-inch fitter mounts to standard outdoor lamp posts

Leviton Low Voltage Pushbutton Station 2 Button-On/Off 1-Gang White (LVS-2W)

An open gimbal-ring track head that cradles a PAR30 lamp in a pivoting metal ring

Lutron Nova 20Bal Fluorescent Single-Pole Slide-To-Off Dimmer Almond (NF-20-AL)

Southwire Garvin 6 Inch Floor Ceiling Flange Malleable Iron (FF600) Tier8 Lutron Diva 24VDC 30Ma 0 10V backorder1428 Maximum Overall Length 5 RCD111I Lutron Diva 24VDC 30Ma 0 10V Single Pole Dimmer Black (DVTV BL) and the 3 inch fitter mounts to standard outdoor lamp posts