I don't know, but that's what I've read. now I have purchased 1 aquatic life hibrid 4x39w, and 2 Mitras LX 7204. can you tell me how to hook the 2 mitras to the structure?
I believe the Mitras are wider than the stock width in the 18" fixture. To use the Mitras you would need to expand the width of the fixture to 19.4" with item number 470607 Decorative end, along with wider LED brackets item number 470604 x 2.