17D USB Window balance

A home owner from Gabriola, BC says:
The length required is 19 inches tip to tip including plastic ends. 9/16ths wide x 5/8ths deep.
User submitted a photo of a window balance.
Profile picture of Tom
Tom from SWISCO responded:
Thanks for posting. I'm afraid I can't determine exactly what you have based on this picture alone. In order to identify the Series, I will need to see the top attachment at the other end of the balance, as well.

Also, keep in mind we determine length based on the metal channel only. Based on your stamp, your length is likely 18".
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