1/2 x 29" channel balance

A home owner from Florida says:
Need to identify the correct part numbers to replace these 1/2" x 29" channel balance and top sash guides.
Thumbnail of the uploaded file named .5 x 29  hook1.jpg
Thumbnail of the uploaded file named .5 x 29 bottom1.jpg
Thumbnail of the uploaded file named .5 x 29 markings1.jpg
Thumbnail of the uploaded file named .5 x 29 top1.jpg
Thumbnail of the uploaded file named top sash guide1.jpg
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Emily from SWISCO responded:

Hey there!

I recommend our S351-29 or S390-29 with the 2820 strength option, depending on the depth of the bottom fitting. Measure as shown in the image below to determine the best match. As for the top sash guide, see if the specifications of our 18-199 align with your old one. 

Comparison of the S351 and S390 balance shoes.
Comparison of the S351 and S390 balance shoes.

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