Windoor Signature thumb turn with square drive. Color: Polished Brass. 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.
***Non-returnable. Price for in stock only. Please call before ordering.
