Coil Balance Assembly

A handy person from Fairfax, VA 22033, US says:
November 29, 2023

Which coil balance spring should I order?

Looking to replace window coil balances spring for My window (vinyl blind is about 36 in W x 72 in L), double coil balance, identify number 7 based on the stamp from the coil. attached related pictures.

Thank you!

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Emily from SWISCO responded:
November 30, 2023

Hello there!

Based on what I see here, I recommend the S190-740 7-pound spring. We also sell the 15-181 double support if you need that. Take a look at the specifications and let me know if you have any questions! 
Coil Balance Shoe
Coil Balance Shoe
15-180
$3.97
Double Support Detent Clip
Double Support Detent Clip
15-181
$6.17
740 S190 Coil Balance Spring
740 S190 Coil Balance Spring
S190-740
$9.74
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