Your bulbs are energy efficient, but what about your housings? These gasket, airtight housings keep heated or cooled air from leaking into your ceiling spaces. The steel housings adjust up to 1.75" to accommodate shallow ceilings and fit PAR30/R3/PAR30LED/PAR38LED lamps. IC rated, the pre-wired units are designed for mounting in direct contact with insulation materials. Coupled with pre-wired junction boxes and in packs of six, these housings make swapping out your recessed fixtures simple.