Toilet flange spacers and closet horn seal
Plumber's trick...A toilet flange can be level with your finished floor or sit directly on top of the finished floor, but never higher. Use a wax seal to make up the difference. They make "jumbo" wax seals for flanges that are flush with the new finished floor. On a flange that sits directly on top of your new finished floor, use one standard height wax seal. Do not use wax seals with the plastic horn. You only use those in certain situations which I am not going into right now. Also, NEVER stack two wax seals, one on top of the other! One will slide off the other and you a waxy mess under your toilet!