This item has been Discontinued and limited to existing inventory, may have minor blemishes.
Interlock only for an Andersen Prefinished Terratone wood gliding door built from 1966-82. This will only fit the 2 panel door. It is Terratone(gray) in color. It goes on the stationary panel with the lock. It has a cutout to fit around the lock. 

79-3/4 inches long. This is one of two pieces for this location.  

For more information, please read article: Identify Your Andersen Weatherstrip 
or download a Worksheet in PDF format to help you decipher which door you have.