R3-G19ICA 3 Inch IC New Construction Housing is made of steel and adjusts up to 1.75 inch ceiling thickness. IC rated designation allows for housing to be in direct contact with insulation. Accommodates up to a 35 watt, 120 volt GU10 MR16 halogen lamp or equivalent 120 volt GU10 MR16 LED lamp, sold separately. Halogen dimmable with a standard incandescent dimmer. LED dimmable with recommended incandescent dimmer by lamp manufacturer. ETL listed. Suitable for damp locations. A complete fixture consists of a housing and trim, sold separately. For use with R3 3 inch GU10 MR16 compatible trims.