For RVs this mostly applies. I've never seen exceptions
Comments on house Toilets later.
There are 2 by 3 by 3 toilets for RV's plus one more
Two: Short or tall. Tall ones are designed to mount to the floor. Short's to a Riser there are very good reasons for this.
Where is the flush pedal (1: left 2: Center 3: Right)
and 1: Round 2: Short oval 3 Full size oval
The additional type is gravity dump or macerator type but clearly you can't swap those.
On the first: Must have same height
On the second. 1 and 3 might be a problem as the water vave is on the same side as the pedal.. 2 The water valve is in teh back and a length of flexible water line is all you need to fix it (how I did it)
and on 3: Depends on the size of .... Your seat.. I like the full size oval
Finally some need "Special" seats. Many take seats you can find at your local Plumbing supply place.. Lowes. Home Depot, Menards, Wal*Mart, Joe's hardware.
Mountings are usually universal and the water connection is as well
HOUSE comments: There is a measurement.. Toilet outlet to wall, that varies from Toilet to Toilet... So sometimes you need to measure that to be sure. Oh and I like TOTO toilets.. They fulsh better.
Home was where I park it. but alas the.
2005 Damon Intruder 377 Alas declared a total loss
after a semi "nicked" it. Still have the radios
Kenwood TS-2000, ICOM ID-5100, ID-51A+2, ID-880 REF030C most times