I worked with those four small eyebolts on the top of the fixture. What I did was use 8 – ½ inch machine bolts that fit through the eyebolts. I drilled a hole in offset aluminum angle (3/4 x ½ x 1/16) (FYI, A four foot piece at HD is six bucks and change. On a side note, I didn’t go to HD looking for offset, just wanted a regular symmetrical piece of aluminum angle. But my local HD had their aluminum section very poorly stocked. The only four foot angle was this one offset piece.) Now each side of the fixture has a one foot length of aluminum angle that is attached by two bolts through the eyebolts. I did have to file slots around the fixed cable points, since they were slightly in the way of the angle. Here’s a picture of the bolt point of the eyebolt to the angle:
I then drilled holes in the opposing side of the angle, and attached this to a wood frame of the canopy using machine bolts. You can see the nut end in the above picture.
Now I’m not done. The above was for two fixtures in a canopy over a five foot custom 90 gallon tank where the lights were “hung” from the top of the inside of the canopy. I also have a JBJ 28 were I first build a canopy for this tank and then cut a hole into the ¾ plywood top, slightly smaller than the dimension of the light fixture.
Now this cut was actually done at a 45 degree angle (from the top side), so that the bevel on the light fixture would rest in this hole:
Here is that fixture resting in the canopy top, so you can get the idea of what I’m talking about. No hanging stuff needed….the light will simply rest on the top of the canopy, fitting in the beveled cut-out.
