Need 2 window channels form traco impact window

Thanks for reaching out to us. We can supply this balance, but it will have to be a custom order due to its configuration.

Before we go any further, can you verify the stamp? 2580 indicates an extraordinarily strong spring, and to be honest I don't think I've ever seen one made that's this strong. Can you also tell me the weight of the sash? Lastly, please tell me the depth of the shoe. Please write this measurement out for me, as it's difficult to garner size from just a photo of a tape measure.