Window springs

A home owner from USA says:
Hi. Had trouble with the online form.

Need some help making sure I get the right replacement hardware for non-tilt windows. Channel is 1/2, the metal (not including the plastic footings) is 45 inches long. Hopefully the attached pics help.

Profile picture of Tom
Tom from SWISCO responded:
Thanks for contacting us. Could you confirm the length of the metal channel? Based on your stamp, it makes me think it might be 46" long, not 45". Can you also confirm the weight of your sash? Finally, if possible, I'd like to see a clearer picture of the top nylon attachment. I can see the bottom nylon attachment well enough, but seeing the top is also necessary to identify the Series. Thanks!
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