21 watt flexible LED tape comes in 2m, 3, or 5m reels. Double sided 3M tape with a high colour rendering of CRI90, 3 step MacAdam LED chips and colour temperature options of 2700k, 3000k and 4000k. For use with Lumen8 Logikline aluminium profile, and with TOPMET aluminium profile. Keep in mind that with higher wattages, it is a better idea to use the larger profiles so the tape doesn't overheat and break. This tape is the highest wattage that Lumen8 offer- it can be used for larger spaces with high ceilings, as indirect or direct functional lighting. Good for larger coffer lighting, or for filling a room with even, washed light. 21 watt tape would be of better use in larger commercial spaces, or in large residential spaces with an optional dimming setting. All tape is dimmable with the correct driver and accessories.