Basically you just mount them to the top of your tank. YOu can position them however you want. They are secured by 2 screws and depening on what size you get.. i mounth them with the longer side going to the depth of the tank. I had posted a picture of mine a while back but i cannot find it in my profile to repost.
:I wanted to buy Pro Heat Radient heat panels for the cages i am building. Can someone please post a pick of the positioning of them? I have seen some mounted on the ceiling of tanks. Thanks. :Steve