Replacement balance and top sash guide

A quick learner from USA says:
June 3, 2016
Please help me identify replacement parts -1/2" balance numbers are 2820 and 2730.

I also need to identify top sash part.
User submitted photos of window hardware.
Profile picture of Tom
Tom from SWISCO responded:
June 6, 2016
Thanks for posting. First, let's look at the top sash guide. Our 18-110B appears to be a match, but I would just make sure our dimensions match yours.

As for the balance, you give us two different stamps. Are these in the same window? They should be the same. The Series could either be our Series 390 or Series 351 depending on the size of the shoe. Which is a better match?
Top Sash Guide, SeasonAll
Top Sash Guide, SeasonAll
18-110B
$2.27
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