Looking For A Replacement Toilet For My Current Thetford 34421
Published 01/23/2026
Question:
Hello, I have a Thetford model 34421 and need help identifying an exact replacement of that toilet so that I match the Rough in requirements as well. Can you please identify for me the correct toilet to purchase? Thank you in advance. Can you also tell me the rough in minimum for the Thetford 34421
asked by: Mike B
Expert Reply:
Hey Mike,
The replacement we offer for your Thetford 34421 is the Thetford Aqua-Magic # TH76FR. Dimension wise the 2 toilets they are the same size in all aspects including the rough in measurement. The rough in for both toilets is at least 11-1/2" taken from the wall to the center of the floor flange, I attached a photo showing this below. They have the same 2 bolt mounting pattern so installation will be an easy swap.
What kind of trailer/RV are you going to be replacing this in?
(click to enlarge)
Product Page this Question was Asked From
Thetford Aqua-Magic Style Plus RV Toilet - Standard Height - Round Bowl - Slow Close - White Ceramic
- RV Toilet
- Standard Height
- Round
- Slow Close Lid
- 11 Inch Rough-In
- Gravity Flush Toilet
- 360 Swirl - Better
- Ceramic
- White
- Thetford
more information >
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on RV Toilet
Mike B.
1/23/2026
Many thanks!!!!!