We have this in our DVB400. The instructions say to install each piece so that their bottom touches the bottom of the box. The middle section isn't cut to clear the log holder. I notched it to clear the log holder and then noticed that when the sides were installed the same way the bricks didn't line up properly. What I found was that I had to cut the 2 supplied brackets to make 4 of them. I used 2 to lift the middle section so that the top was touching the top of the box. Then I installed the sides so their bottoms touched the bottom of the box. Now the bricks line up properly and look great. Installing the firebrick this way means that the notch I cut into the center was not necessary after all. I had to get a couple more sheet metal screws as only 2 were supplied even though the 2 brackets had 3 holes each.
I've attached a picture of the center piece not fitting properly when installed according to the instructions and then one of the completed install.
Pros:Looks great and realistic
Cons:The install is not very straightforward and the instructions are generic for many different models.