Remove Thetford toilet riser
Our TT has a Thetford "tall" toilet with an additional Thetford accessory riser (+2.5 inches) installed under it by prev-owner. Neither of us are tall enough to appreciate the total height. I intend t...
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That's it, you will need shorter closet bolts and a new rubber seal ( don't use a wax ring, use the therefore seal). The riser is just held together by the long closet bolts going from original floor flange, through riser, in to toilet, along with two rubber flange seals.
