Windoor Signature thumb turn with square drive. Color: Cream. Standard option for Windoor 8000 and 8100 series doors. Optional option for the 6000 series. Windoor part: HDLONG-2180A.
**If your thumbturn has the flat drive tail piece, you will also need to replace your mortise lock with the square drive 16-800.
If you are looking for a White handle, purchase 16-799W.