small sash guide?

A home owner from Culpeper, Virginia says:
Hello,

As you can see, this small metal piece broke in half. It is located on the bottom of the window and I think it might be a window guide(?).

HERE IS THE NUMBER STAMPED ON THE PART: 1556-1

MANY THANKS FOR YOUR HELP IN IDENTIFYING THIS LITTLE PART!

-c. keith
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Bob from SWISCO responded:

Could our 26-326 possibly work as a replacement? Look over the dimensions and see what you think. 

A home owner from Culpeper, Virginia says:
I will make a comparison as soon as possible. Thank you, Bob! --charlie
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