Tom from SWISCO responded:
January 8, 2018
For a balance with winged attachments on top and wingless attachments on bottom, we recommend the Series 395 balance. Yours would be S395-30, if the metal bar is 76 cm long. The proper option for that balance if the sash weighs 21.9 lb is 2930, so choose that option when you order. Finally, our take out clip is part number 16-002, so make sure that works for you. That should be all you need to know to place an order.
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