RV Toilet Replacement Recommendation for Replacing Rough In Dimension of 12 inch
Updated 03/04/2026 | Published 01/31/2026
Question:
We need to replace our RV toilet. I am curious about the minimum rough opening needed. A lot of items I have looked at show a minimum of 9 5/8. if the current toilet has a measurement from the wall to the center of the mounting bolts of approx. 12, would one of these be able to be used as a replacement? Should we look for one closer to the 12 measurement? Thanks.
asked by: Daniel O
Expert Reply:
Hey Daniel, since your current rough in dimension for your RV toilet is right at 12 inches you'd need a toilet that has a larger dimension there than what you've been looking at with like the Dometic part # DOM29FR which has a rough in dimension of 11 inches. This is a standard height toilet which most people prefer but is that the height you are looking for or are you wanting something shorter?
Product Page this Question was Asked From
Dometic 510 RV Toilet - Standard Height - Elongated Seat - White Ceramic
- RV Toilets
- Standard Height
- Elongated
- 11 Inch Rough-In
- Gravity Flush Toilet
- Full-Rim - Best
- Ceramic
- White
- Dometic
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Jameson C.
3/4/2026
Hey Daniel, how did things go with finding a toilet that fits your 12-inch rough-in space? Did the standard height option end up working for your setup? Your update could make it easier for others replacing their RV toilets.