Toilet Flange

Each grommet in the new tank has a flange at the very bottom inside rim to act as a stop for the inserted drain pipe from above.  So we measured carefully and cut each of the 3 drain pipes so each would go into its respective grommet and stop about 1/8 inch from that bottom flange.  The 1/8 inch gave some leaway so the pipe didn't push through the flange and down too far into the tank.  We made the toilet flange the same way so it went into the 3 inch grommet as far down inside the grommet without pushing throught the bottom grommet flange.  We secured the toilet flange with new SS screws.