part for Andersen 400 SERIES GLIDING window

Contractor from California
It looks like it's guide to the window. Please let me know if you have some thank you.
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2 Replies
Casey
Casey from SWISCO
SWISCO
Expert

Hello,

Unforutnately, I do not recognize your part at first glance. Could you show us where it installs on the window, as well as elaborate on its function? That would help us determine if a possible replacement is available. Thank you. 

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