The SYLVANIA ULTRA RT5/6 is a 5 in. and 6 in. compatible LED recessed downlight kit creating high performing white light and is optimized for new construction and retrofit applications. Installation is done quickly and easily in most standard 5 in. or 6 in. Insulated Ceiling (IC) housings, Airtight (AT) housings and non-IC housings. The adjustable gimbal features a smooth travel from nadir to a 30 tilt, making it suitable for slanted ceilings and wall wash. The gimbals friction blade design allows the downlight to be installed in any position within the housing aperture and the 360-horizontal rotation capability of the gimbal head offers easy aiming and adjustment. The SYLVANIA ULTRA RT Series recessed downlight kits are dimmable down to 10% of full light output with compatible dimmers. The minimum dimming value is based on light output using compatible dimmers and may not be an indication of the kit's full rated capability. In some cases, standard incandescent dimmers require a minimum load of typically 40-Watt s on the circuit for full range dimming performance (four LED modules). For dimming with digital (smart) multi-location dimmers or when dimming fewer than four LED modules, electronic low-voltage (ELV) dimmers are required (some ELV dimmers need a neutral connection in the wall box).