Knife Edge Ceiling Tunable White is another innovative design, coming from the family of plaster-in 24VDC systems, pioneered by PureEdge, that recess within 5/8" drywall without joist modification. With a true Knife Edge profile, there is no visible sightline of the lens or light shield, delivering a seamless, visual field across adjacent surfaces. The Knife Edge system generates a sophisticated and seamlessly sharp architectural element, providing consistent lighting across neighboring surfaces. It accommodates 5/8" thick drywall on its underside, making it suitable for architectural reveals, accent lighting, and surface mount applications. Our Designer-Grade High CRI Tunable White technology in 2000K-6500K (2K6K) or 2700K-6500K (27K6) grants independent control and adjustment of color temperature and intensity from 2000K (Sunset) through 6500K (Day Light White). Tunable white lighting visually, biologically and emotionally contributes to human interaction with the physical world. Human centric lighting (HCL) builds on this technology bringing the dynamics of natural daylight indoors, and delivering a positive effect on human health, wellbeing and performance. Remote Power supplies are required and sold separately. Coordinate installation with electrical and drywall contractors. Includes a 5-year pro-rated warranty.