Bold reasoning was 16.2 hands high at the withers.
Cobs can get up to 14.2 hands high
Phar Lap was around 16.1 hands high.
17 hands high
Mine That Bird is approximately 15 hands high.
Friesians can range anywhere from 15.2 to 17 hands high on average.
16.2h
14.8
Over seventeen hands tall.
A pony is under 14.2 hands high and on the other hand the horse is 14.2 hands high and over.
That would be 13 hands high.
A horse that's 4' 3" at the withers will be 12.3 hands high.
I will assume you are asking about Impressive the Quarter Horse. Impressive was 15.1 hands high.