Here are some sizes/dimensions from an old post:

12 volt Length, Width, Height
22F 9 1/2, 6 7/8, 8 5/16
22HF 9 1/2, 6 7/8, 9
22NF 9 7/16, 5 1/2, 8 15/16

Here are on-line lists of dimensions:
https://www.batterystuff.com/kb/tools/bci-battery-group-sizes.html
http://www.batteryweb.com/bci.cfm