The Halo HL4RSMF is a 4 in. recessed lighting, new construction, mounting frame that is perfect for install from below fixtures (i.e. canless lighting). Great for new construction projects in lieu of a can or housing. Canless lighting goes where LED can lights can't. Using this mounting frame, you can easily reserve space in the ceiling for your canless recessed lights and provide routing guidance for the drywall contractor. This Halo recessed lighting mounting frame works for round and square Halo canless lighting fixtures (including HLB, HLA, RLDM and RADM product families). Attach the driver junction box to the building structure and use this LED recessed lighting fixture to meet local code requirements where install from below fixtures must be supported directly by building structure. (6 mounting frames included). Color: Gray. Material: Steel.