Halo HL6RSMF 6" Round & Square LED Downlight Mounting Frame

6 Inch Round Or Square Mounting Frame, Compatible Fixtures: null, HLB6S, RL6*DM The HL4RSMF and HL6RSMF mounting frames accept install from below fixture fittings. Use to reserve the ceiling location, provide routing guidance for the drywall contractor and attach the driver junction box to the building structure. Knock-outs allows the frame to accept square fittings. Use to meet local code requirements where install from below fixture fittings must be supported directly by building structure.