Since you know the height is 1.2x the diameter, the approximate height and diameter can be calculated from the volume.
The volume in cubic inches is listed below for the 4 kettle sizes:
5.5G =1270.5 in^3
7.5G = 1732.5 in^3
10G = 2310 in^3
15G = 3465 in^3
D= 2R [in^3]
H= 1.2D = 2.4R
V [in^3] = PI * 2.4* R^3
PI= 3.14
D= 2* cubedroot(V/(7.54)) [inches]
H= 1.2*D [inches]
Thanks for this.
I did receive an email back from Anvil:
Here are the dimensions.
10 gallon Height-16 3/4" Diameter-13 3/4"
15 gallon Height-19" Diameter-16"
20 gallon Height-21 1/4" Diameter-17 3/4"
They are comparable to the G2 sizes within 1/2".
I'm so torn between a Breweasy or Zymatic for my winter brewing. Both are definitely a chunk of change so I want to make sure I choose correctly.