I purchased part number 18-161

A home owner from Florida says:
I purchased 5/8 sash guide 18-161 and they work fine for the ones I could replace BUT, some of the windows have a broken piece of plastic in the top of the metal bar that goes up to the sash guide . What is THAT OTHER PART? Channel balance?
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Tom from SWISCO responded:

It sounds like the nylon fitting from your channel balance, yes. That could possibly be our 19-005 but it's just a guess. There are many other possibilities, that one is just common. You'll have to look it over to see how well they match. The video below may also be of some help.

How to Repair a Jammed Window
How to Repair a Jammed Window
VIDEO
WATCH >
How to Replace a Top Sash Guide [1080p]
How to Replace a Top Sash Guide [1080p]
VIDEO
WATCH >
How to Replace a Channel Balance Attachment
How to Replace a Channel Balance Attachment
VIDEO
WATCH >
Classifying Channel Balance Fittings
Classifying Channel Balance Fittings
GUIDE
READ >
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