1" Bullnose trim with a filleted aperture which allows for minimal aperture brightness while still producing the nadir footcandles. Iolite can-less trims require a compatible LED module and driver box. Compatible LED module: NIOC-1LED Compatible driver box: NJCB-09 Finish: White Accessories: NIO-1AS: Translucent/Opaque Deco Collars NIO-1HC: Hex Louver