No, unless you buy it with the frame. Then you have to remove the old casing to put in the new door frame and it usually makes a mess of the old casing. If you just change out the door, then it doesn't matter. The old casing will work fine. **Just remember that unless you use the exact same door casing (trim), it might not match up with the baseboards. Make sure to get the same width in your door casing or there will be a gap where the door casing meets the floor.