Halo High efficacy 4-Inch LED recessed remodel housing features single wall formed aluminum construction. This round housing has LED lamp that has voltage rating of 120 - 277-Volts. It is insulated air-tite ceiling mountable and has cut out of size 4-1/4-inches. This housing is suitable for use with Halo RL460 series LED modules. It measures 14-3/4-Inch x 5-Inch x 5-1/2-Inch. Housing is UL/cUL listed.