Surface mount frame mounts over an existing junction box and the panel slides into place. Surface mounting frame extends only 2.5" from the ceiling. Can be used with NPDBL-PKW pendant kit. Note: Junction box must be off center frame. Finish: White Compatible Luminaires: NCSP-24: 2'x4' Contractor Series Backlit Panel with Selectable Lumens & CCT NPDBL-E24: 2'x4' Backlit Panel NPDBLSW-E24: 2'x4' Backlit Panel with Selectable Lumens & CCT