Broken part at top corner of sash

A quick learner from Mission Viejo says:

September 1, 2023

Hello,
In the process of replacing a window balance, I found this part at the top corner of the sash, that is supposed to catch the balance is also broken. Can you tell me what part this is, and how to order the correct replacement. The three included photos are: 1 of the broken part and 2 of the other side, unbroken.
thank you

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A quick learner from Mission Viejo says:

September 1, 2023

Additionally, this is for a 20 lbs. sash, with 27" Series 385 Channel Balance
Option: 2640. Thanks!

Emily from SWISCO responded:

September 5, 2023

Hi there!

The part shown here is called a top sash guide. Yours appears to be a match for the 18-008. Take a look at the specifications and see if you agree!

Detail of 18-008

Alternate view of 18-008

5/8" Top Sash Guide

18-008

$0.95

27" Series 385 Channel Balance

S385-27

$10.55

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