LUMII BLACK BLADE 400W PLUS 30W UV/FR BAR LED KITA great combination of LED grow lights to give full, balanced spectrum 3500K white light plus UVA (385 nm) and Far Red (730 nm) over a growing area up to 1. 2 m2. The LUMii BLACK Blade 400W LED has female threaded inserts set in the frame between its twin LED plates, which are designed to accept the LUMii Black Bar 30w UV FR LED, which comes with fixing screws provided. The LUMii BLACK Blade 400w LED is a cool running and efficient plate format LED