30" no-tilt window channel balance - Stamp 29DS 38

A quick learner from Wellington, FL says:
First, thanks again for your help on my previous order.
I need channel balances, take out clips and sash guides for a no-tilt window.
Channel balances are 30" x 5/8" x 5/8", with a stamp showing 29DS 38 (see pic).
Please help me ID the parts.
Thank you.
User submitted photos of a window balance.
Profile picture of Tom
Tom from SWISCO responded:
I would start with our S395-30 channel balance. The stamp is a little different from our options, so I would recommend weighing your sash on a scale to confirm if any of our strength options would work for you.
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