i contacted pentair this morning about the window size on the 96" tanks. They told me they are 67x18 which seems very small for a 96x30 tank. I'm interested to see if anyone here has the bigger tanks OR the next size down (76 I think) and how the window size looks. I'm getting interested in these because they're so cheap and the the idea of building one into the wall really gets my juices flowing. I could trim around the glass so no blue is showing and do a 3D background for the back. Since you can't see the sides I could leave those alone and have the sides drilled out for filtration. Thinking of doing this plus two 55 gallon drums for filtration instead of the plywood tank I have been mulling over.