To further confuse the issue Randy, you may need a "Flush Tite" ABS closet flange. Fits over 3" or 4" pipe. Without pipe stop the pipe may be cut flush with floor. Mounting slots on four sides with four countersunk holes for securing flange to floor. The floor can be drilled for attaching the flange to the floor. Install the flange first, then tile up to the flange.