A new construction frame-in with a collar can be used to assist in installing 6" can-less downlights. Compatible Luminaires: NCSC-R6W2TWMPW: 6" Contractor Series Can-less Wafer Downlight NEFLINTW-R6MPW: 6" FLIN Wafer LED Downlight Selectable CCT NLTH-61TW: 6" Theia LED Downlight with Selectable CCT NQZ2-61TWTW-MPW: 6" Quartz LED Downlight with Selectable Lumens & CCT