The first LED Housing designed for poured concrete. Fits seamlessly into finished concrete ceilings. Twist & Lock feature for easy trim installation. 750 & 1000 lumen outputs. 2700K, 3000K, 3500K, 4000K CCT. High quality 93+ CRI Cree LED. Flicker-free TRIAC/ELV Dimming down to 5% nominal measured light output. UL listed for though-branch wiring 4-in, 4-out #12 gauge wire. Round, Square, or Decorative Trim Styles.