The T-5 fixtures I installed last spring were Holophane and had the gold Mirro reflective finish on the reflectors. They have been really successful in replacing the MH high bays on this particular job. It will be 12 months in March since we installed them and it looks like the energy savings over the MH fixtures is going to be around 40%. Part of the reduced usage will be attributed to the use of occupancy sensors on the T-5 fixtures. T-5s are great in the right application. This was a warehouse/distribution center that was climate controlled at 73º year around. I don't think T-5s are recommended where the temp will exceed 85º. They do run hot.
