Back Outlet Toilet Rough In Questions

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Seriousowlisserious

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Hi good people! We are doing a bath remodel and we live in a condo that requires a back outlet toilet. Currently we have a 15 year old Kohler toilet - it works great. They do not make it anymore, but the current updated model is the Barrington K-3554-0. This toilet has a 4 inch rough-in. We are open to buying the same exact toilet again, but we are a bit disappointed that the new Barrington 1.6 gpf is 15 inch height (we like the 17 inch) and more importantly, the tank will sit 2 inches from the wall according to the specification sheet. Our other choice is a Gerber Ultraflush 1.6 G0020325, which we also really like and our contractor does too. However, the Gerber has 4.25 inch rough in. Is this likely to be a huge issue? If so, we will just by the Kohler and suck up the little issues with it. If not, we will buy the Gerber.

k-3554-0-barrington.jpg
 
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John Gayewski

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I would say .25" would be an issue that should be workable. If your remodeling can't you add . 25" to the flue thickness and call it a day?
 

Tuttles Revenge

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Theres a few factors that could make this a moot point. Most rear outlet toilets are made to install on the same rough in as every 4"ish rear outlet toilet. Shimming up a quarter inch is easy to do and still make look nice if you're not able to change either the rough in height or the overall floor height. Depending on if you have a 4" flange or a 3" flange in the wall, you're still targetting a 2" outlet of the toilet to a larger opening at the wall so there is a bit of wiggle room there.

Personally I would buy the toilet that you want and have your contractors make it work.

Also here is your Kohler Barrington in 17" Comfort Height
1664996986199.png
 

Terry

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Gerber also makes a floor mount-rear-outlet Maxwell toilet,

yorkville-vormax-1.jpg


And American Standard Yorkville Vormax
4" to 4-1/4" is very standard, and they come with 2" trapways, you have room to play with.
 
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Seriousowlisserious

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Thank you all. This is very comforting. I think we will go with the Gerber- it has a higher MaP score, is a bit cheaper, and would sit closer to the wall- given that our new tiles are thicker than what they are replacing, and most people here seem unbothered by the .25 inch difference.
 

Tuttles Revenge

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given that our new tiles are thicker than what they are replacing, and most people here seem unbothered by the .25 inch difference.
make sure your plumber knows this. The flange must be in the correct depth from the finished wall in order to interface with the toilet at trim time. Best to get it dealt with while the walls are open.
 
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