Okay... looked back at Amazon into old orders. It is the Medline Drop-Arm Commode. We liked the first one so much that we got a 2nd one. For quite some time, we had one at work and one at home. This particular commode also disassembles well... so we can take it with us when we travel in the car. I hope you find what you are looking for.
Commode= toilet? Comfort height toilet ( 17 inches high) on 3.5 inch pedestal = 20.5. I have the former and just measured and looked up the latter on amazon
We have a "comfort height" toilet (Kohler - Home Depot) with a Toilevator (Amazon) underneath. We also have a Brondell Swash 1000 bidet seat (Home Depot) on it. The total height is 21.5".