120" x 72 " x 42 " and leveling compound was used to make sure it was 100% level.I love big glass tanks, looking forward to seeing this one progress! What are the dimensions?
I must say though, stands like that without a solid member supporting the tank really scare the **** outa me, especially with that much weight on top of them. Hope those blocks are absolutely dead level!
120" x 72 " x 42 "

The filters are going outside above the aquariums water level.I like how you left room behind it to walk around for maintenance. Where will the filters go?
19mm
What thickness glass? Certainly the biggest glass tank I've seen, going to look amazing with that stock.