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Old 03-11-2018, 09:22 PM   #1
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Dometic toilet upgrade

Hey all. We are trying to decide on which Dometic toilet to get to replace the 300 (plastic) one that came in our 2018 Flagstaff 29KSWS. Did a search of the forum and only found one brief discussion about the differences between the 310 and the 320. So looking for more info and opinions on the pros and cons of both models. I understand the 310 now comes with the slow close wooden lid, but can't find out if the lid on the 320 is also slow close. Saw someone said in the other discussion that the 310 is kind of pressure sensitive? Any help would be greatly appreciated and sorry if this has been discussed before and I didn't find it.
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Old 03-11-2018, 09:43 PM   #2
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BE VERY VERY CAREFUL ABOUT UPGRADING FROM 300-310-320

There are dimension differences between the models. The most important being the distance from the neck of the toilet overtop of the drain to the black tank, to the wall behind your toilet.

Some toilets are round, and some are oval, therefore longer front to back.

MEASURE MEASURE MEASURE
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Old 03-11-2018, 09:53 PM   #3
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Thanks kenandterry, I'll be sure to measure everything carefully. Our 300 is positioned diagonally coming out from corner of bathroom and I believe there is quite a bit of room behind it. But that said, I will try to measure to make sure. My dealer has the 310 and 300 in stock, so I can compare those two right there but will have to find out the exact dimensions of the 320. Thanks again.
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Old 03-11-2018, 10:12 PM   #4
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I just installed a Dometic 320 this week and it does not have a slow close lid. The measurement is critical on the backside as it is longer. It came within 3" of our back wall. It is elongated also, so need to think about possible cabinet door that might open towards the front. Fortunately for us, it was a perfect fit. Good luck!
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Old 03-11-2018, 10:57 PM   #5
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Thanks for info FR3Traveler. Just wondering if it replaced a 300 or something else? Just asking to see if the 320 is about the same size as the plastic 300. I can't find the actual dimensions of the 320 on Dometics site. Thanks again
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Old 03-12-2018, 04:49 AM   #6
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Dometic toilet upgrade

I replaced the 300 with a 320 on my 21FBRS. No slow close lid. I had to cut the trim behind the commode below the closet to get it to sit right. But it was worth it. My wife is much happier with her new throne.
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Old 03-12-2018, 05:00 AM   #7
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Quote:
Originally Posted by tonyz1 View Post
Thanks for info FR3Traveler. Just wondering if it replaced a 300 or something else? Just asking to see if the 320 is about the same size as the plastic 300. I can't find the actual dimensions of the 320 on Dometics site. Thanks again
22 x 14.8 x 19.8 inches. $215.20 Google and Amazon are your friends. Full porcelain and wood elongated seat. Just like home.

Do a search on this forum, top right of this page, for lots of info.

I'll be installing one this summer. After doing hands-on measurements.
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Old 03-12-2018, 05:38 AM   #8
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Originally Posted by kenandterry View Post
BE VERY VERY CAREFUL ABOUT UPGRADING FROM 300-310-320

There are dimension differences between the models. The most important being the distance from the neck of the toilet overtop of the drain to the black tank, to the wall behind your toilet.

Some toilets are round, and some are oval, therefore longer front to back.

MEASURE MEASURE MEASURE
This is the Correct answer! You will find out "Toilet Shopping" is NOT cut & dried! The Dometic Toilet Site is Very Confusing in regards to "Seats -Soft close/wood/shape, If you want a High Rise,Ceramic Bowl,Soft Close Lid & Seat/Wood,Round or Elongated Shape,that will FIT your Bathroom location,GOOD LUCK! Youroo!!
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Old 03-12-2018, 09:13 AM   #9
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tonyz1' we did replace a 300 with a 320. You can go to Dometic.com and just put the model # in the search window. It will bring up specs and manuals.

300 = 20" deep, 19.25" height, 15" wide, 8 lbs.
320 = 22" deep, 19.75" height, 14.75" wide, 37 lbs.

Good luck and happy camping.
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Old 03-12-2018, 09:35 AM   #10
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Thanks to all for your replies and helpful information. With those dimensions I think I can do some measuring and know what will fit in my camper. We are Like the slow close lid on the 310, but seems like the 320 is more house like. Just have to buy our own slow close for it. Anyway, with tape measure in hand, I'm heading out to the camper. Thanks all again.
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