Canless Wafer Downlights have an innovative, slim design that installs quickly and easily into as little as 3" of plenum allowing for it to fit into ceiling spaces where most traditional recessed housings do not. No housing required to install. Once installed, our Wafer provides an all-in-one design featuring switchable white color temperature and adjustable lumen output technology. This technology gives distributors, contractors and homeowners the ultimate in flexibility by providing the equivalent of 15 static fixtures in one. The best part is these technologies are controlled by switches located directly on the fixture. Simply toggle each switch to your desired settings: 2700K, 3000K, 3500K, 4000K, or 5000K for color temperature adjustment and low, medium, high for lumen adjustment.