The Philips Lightolier LED Slim Downlight is a core value downlight intended for ceiling or wall mount applications. This 5/8" thick luminaire offers the appearance of a recessed downlight but is actually surface mounted. This luminaire was designed for installation to any standard 3 1/2" round (plastic) and 4" octagonal box (metal) J-Box, eliminating the need for an Air-Seal recessed housing or fire rated boxes—reducing material and installation costs.