Our indoor is 33,000 SF, ceilings are 20' to the bottom of the rafters (it's a warehouse) we have 2 fields, airball at 100' x 160', speedball at around 90' x 100' Also lots of staging and spectator area. The entire field area is netted so that you can view 360 degrees around it.
Also includes a tech area, pro shop and several offices.
We also have a mezzanine level upstairs that we haven't used as of yet (no need with all the room downstairs.)
Hope that helps.