certainteed coil balance replacement ?

A quick learner from san francisco says:

February 1, 2014

Hi, I need to replace my coil balance springs ... I'm certain I have an old style certainteed (without the nub) ...
My springs however, have a 10 J stamped on them ... they look like 171 springs, they are bronze colored, not silver ...

I can't tell for sure though ...

i weighed my window and it was 17 lbs ...

A customer submitted image of their coil balances.

Paul from SWISCO responded:

February 3, 2014

Thanks for posting. Don't mind the color, that's not an important factor for this kind of spring. As for the spring, it looks like our Series 170 coil. For a sash weight of 17 pounds, I recommend our S170-409 . See if you agree.

A quick learner says:

February 3, 2014

Thanks a lot for taking a look ... the S170-409 looks like the best way to go ...

I'll do the experiment !

A quick learner from san francisco says:

February 12, 2014

i just put the new springs in ... MISSION ACCOMPLISHED !

the trickiest pary was getting the pieces back in the window frame ...

it had to be pried open but nothing broke !

409 Series 170 Coiled Balance Spring

S170-409

$6.57

SWISCO S170 and S171 Coil Balance Assembly

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How to Replace a Triple Coil Balance System

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