OK, let me see if I have this right...
You want to find out the measurements (length, width, height) of a 96 liter tank, is that correct?
I did find one site (in German, I think) that gave 96 liter measurements as 80 x 30 x 40 cm.
96 liters equals about 25 US gallons, and a standard tank of that size here in the US is 24 inches long x 12 inches wide x 20 inches deep. So that would be 61 x 30.5 x 51 cm.
Did this help a little?