Channel Balance Replacement

A quick learner from USA says:
Please help me identify the channel balance I need. I need a left and right balance with attached end clips. My balance is for a non tilt window. The length metal end to metal end measures 30" although the marking on the Balance says 29A. The width is 1/2. See pictures attached.
User submitted photos of a window balance.
Profile picture of Paul
Paul from SWISCO responded:
Please see our Series 377 channel balance. I believe this could be a good match for you. You may want to weigh your sash to confirm the best choice for your spring strength option.
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