Block and tackle window ballast

Home Owner from Clearwater Florida
Need full replacement both sides of a door window. It has 22 10 stamped on side.  Plastic pieces screwed into the top corner of the lower sash are also deteriorated.  
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Bob
Bob from SWISCO
SWISCO
Expert

Thanks for posting. This looks like either an S351-23 or S390-23 Channel Balance. The only difference between these two balances is the 'depth' of the bottom nylon shoe, or the 'heel-to-toe' measurement. See the diagram below for reference. Measure your old balance's shoe to see what matches best. For a stamp option choose 2210.

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

For the Top Sash Guide, it might be the 18-009, but please compare with an undamaged guide to see if this matches what you need. If not, tell us how yours differs and we will try and find something better.

Side view of 18-009
Side view of 18-009
Detail of 18-009
Detail of 18-009

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