I installed 1 in my 90 gal. I choose to remove the top frame, it was hard. I guess the pros are it looks nice and hides all plumbing I even had enough room on 1 side for a penguin 150 ph. Cons are takes up to much space and if its below the water line small fish can get to the back side (Ive had a small brichardi cichlid living behind it for 5 months). Also remember u have to dress up the sides of the tank if u see them, I trimed mine with oak plywood. I dont think I would do it again unless it was the flat 1s or maybe installed behind.
The bottom pic of the side is the oak plywood u can see how much space it took, the other side is half that. Oh yea I think is was around (180 bucks 48x24). If your still interested I know a company state side selling them.