What I'm saying is the orphek light bars are completely sealed up but they can also be taken apart and serviced. So if a led goes out you can take it apart and replace the individual led yourself. The kessil leds aren't able to be replaced. So if they burn out you just have to throw the whole light away which seems like a waste to me.
Also notice the aluminum heatsinks. Gotta say I'm very impressed with the Orphek OR2 light bars after receiving them this week. These lights were over built. Two Or2 120's put out almost the same par as the two 80 watt t5's they replaced after measuring them both with my apogee meter.
I’ve been looking at these to replace the t-5’s that have a bad ballast. Did you go with the actinic or the 50/50? Where did you order? I heard that some are getting hit with duties/tariffs from shipper?