have a non tilt window and trying to identify parts to replace. can't figure out how to install either cause this window doesn't haver the clips inside the window Fram track at the upper part of frame that on other windows pop out so the bracket has something to hold bracket in place once its under spring tension so not sure how it goes back in. I didn't remove it so Im trying to figure out. I did send pick of these small plastic clips (4 for each window) maybe those are the key to installing new channel brackets. Im missing some of those small square clips too. The metal bracket not including nylon plastic fittings on each end is 29" long. Help me obi wan!
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Casey from SWISCO responded:
May 23, 2023
Hello, It looks like you have either our S351-29, with a 15-002 bottom attachment, or S390-29, with a 15-001 bottom attachment. Take a look at the image below to determine which balance you'll need. You'll also need a 2840 spring strength option for your replacement balances. We also offer the 16-002 take-out clips that are commonly used to remove these balances. Review the specifications below to see if you could install these in your window. The other clip shown in your photos resembles the 67-026 face guide. Take a look and thanks for posting! 
Comparison of the S351 and S390 balance shoes.
Alternate image for 16-002
Dimensions for 67-026
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Casey from SWISCO responded:
May 24, 2023
The top sash guide shown in your photos looks like a match to the 18-166 shown below. Review the dimensions to confirm that they match up to your part. 
Detail of 18-166
Profile view of 18-166
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![How to Replace a Top Sash Guide [1080p]](../../images/videoThumbnails/107.jpg)
