Theia recessed downlights do not require any housings, which makes installation easy. Simply cut the ceiling, wire the junction box and insert the luminaire in the ceiling cavity. IC air-tight luminaires include selectable CCT switch and are available in 4", 6" and 8" apertures. Delivering up to 2100 lumens in 2700K/3000K/3500K/4000K/5000K.