Guest
one time you are talking about a closet collar and then you state your question refers to a floor drain,do you know the difference between the two? The top of the collar can sit a half inch above the finished floor.Why get hostile with the people who answered?Allyou have to do is figure the height of the finished floor and how far the pipe fits into the collar and cut it off.Better yet get an internal pipe cutter.Put a spacer over the riser and cut it off after the floor is done.Good luck.
