The Whirlwind Power Link Rack Lightning PLR-PSRK-16 is a 16RU, RGBW Rack Lighting Kit, rail mount version. The Whirlwind Rack Lightning series is designed to illuminate your rig in 8 different color settings with an adjustable dimming control to get you out of the dark ages and into the light! Available as a rack rail version, or as an overhead single space unit the PLR-PSRK are used in conjunction with the PLR-PS3 and the PLR-PS3S control units to light your rack (sold separately). They are available in sizes to fit 8, 10, 12, 14, 16, 18, 20 and 24 space racks. These rail kits will attach to your rack without having to remove any of the gear currently in the rack.