anderson window balancer

A contractor from Millbrook NY says:
July 1, 2021

Double hung wood sash windows Circa 1987 OW-36" OH-30"

Balancer code 11600-17 E43 9#27 6-86

according to many of your past posts the Part#'s for this balancer are not consistent and I need 8 of them.

Please Advise

Peter A

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Dave Sr. from SWISCO responded:
July 6, 2021

Hi, Peter.

The 9#27 stamp indicates that you need the 24-939 Andersen sash balance to replace your original assembly. Look it over and see what you think. 
Andersen Sash Balance, 927, 931, 937, 939
Andersen Sash Balance, 927, 931, 937, 939
24-939
$54.20
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