Channel balance selection

A contractor from Austin, TX says:
Please use the attached pictures to guide me in selecting the correct window balances. The stamp is difficult to read: it could be 34201, 3420E, or 3420F.

Thank you!
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Tom from SWISCO responded:

Check out S370-35 ! It's available in a "3420" option. You can ignore the extra symbol after the code.

A contractor from Austin, TX says:
Thank you so much for your help and quick reply!
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Tom from SWISCO responded:

You're welcome! Any time.

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