ANDERSON 11600-17 SASH BALANCER

A contractor from Glen Mills PA says:
Hi,

I'm trying to repair an old Andersen window where the sash balancer has failed.

I've removed the balancers.

It appears to me the part numbers are 11600-17.
The windows is double hung.
I figure it's about 25 years old.

I also see a number stamped on the balancers:

K4 8#27 7-87


I need the left and right balancers.

Thanks
Mike
Profile picture of Paul
Paul from SWISCO responded:

Thanks for posting, Mike. Our 24-837 Andersen sash balance box should work in place of yours with the stamping of "8#27". 

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