Coil Balance System ID

A home owner from Charlotte, VT says:
August 11, 2021
Counter balance and pivot pin

Paradigm 8381 (8300 series) Double Hung
Springs look to have # 6 and # 7 respectively as in pic attached:

Please advise thank you
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Bob from SWISCO responded:
August 16, 2021

This looks like an older version of our Series 140 Coil Balance system. If the springs are stamped 6 and 7 respectively, then you likely need a 13 pound S140-13 Coil Balance system. Let me know if you have any further questions. 
13 lb Series 140 Quick-Tilt, Dual
13 lb Series 140 Quick-Tilt, Dual
S140-13
$12.05
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