I didn't get the acrylic shield, I have heard some problems with them melting. I have a glass cover on my tank, I may remove it after my tank has time to get accustomed to the new light. The picture of the legs will give you the basic idea behind it. There are two nylon bolts that go thru the top of the legs and go into a small depression that I ground, with a dremel, into the top plastic rail of the tank. The end of the tek light sits into an 1/8 in groove cut into the top of the legs. If you have a table saw, or access to one, it was a very easy project. Glad to answer any questions.