I have the T11 and love it. I ask for the cut outs also from the top. I think now you can get the flo. light option which you should because you need the light to clean and look for ur/bm.
I also had them drill a 1/2" hole on each end about 6" up from the floor to put in my probes for my T-stats.
They are sooo easy to put togather. It said to only seal halfway up in the corners and along the bottom but I sealed all ends top etc to help hold humidity and make it more airtight.
It's a great cage and great people to do business with