For my large bank of UV tubes (twelve 48" tubes) I bought the two-tube fixtures and just used them as is by bolting the fixtures to a piece of 5/8" plywood, around which I placed sides 3/4" X 8" on the sides and back, and 3/4" X 4" on the front. All you have to do is wire the units together, including ground, and connect to an outlet plug. You will also need a small muffin type fan, 4" diameter or so, in one side of the unit to dissipate heat. Paint the inside white, and the outside to taste, and there you are.
Originally Posted by Shinnya
This really is remarkably simple to do for anyone with modest construction skills. As I recall, it took about 2.5 hours for me to assemble this big UV box, not counting painting. Took more time than that tryng to figure out how to get it upstairs, and even more time figuring out how to use it with my 38"X27" vacuum frame.