Looking For Replacement For Thetford Model 20920 AM4 Toilet
Updated 09/08/2025 | Published 06/09/2025
Question:
I am looking for a replacement toilet for my camper. It currently has a Thetford model 20920 AM4 toilet. High, white model. It attaches with bolts 6” apart and seals on a ring. I’m looking for a replacement model and seal. Let me know what current model might be. A foot flush might be ok too if needed. Thanks,
asked by: Bill S
Expert Reply:
Hello Bill, thanks for reaching out. We should have a good toilet option for you, but I was not able to find any references for that part number, so I am not sure what kind of dimensions or space you are working with.
Basically I will just need to know the overall dimensions of your toilet, as well as the rough-in measurement. That being the distance from the wall to the center of the flange. That will help us know exactly what toilet will fit in your bathroom space.
For example, the Dometic 310 Part-Timer RV Toilet # DOM57FR is 18-1/2" long x 15" wide x 20" tall overall and has a 10" rough-in measurement.
Reply on this page with those measurements and I am happy to look into it and make a recommendation.
(click to enlarge)
Jesse M.
9/8/2025
Hey Bill, did you have a chance to measure the dimensions and rough-in of your current toilet? I'm here to help you find the right replacement once you have those details.