Milgard Vinyl window balancer

A home owner from Northern California says:
June 29, 2016
29 4 GV CMC 7 is imprinted on the window balancer. What is the weight of the balancer I should pick for the S350-29 series? And is this the right series for my window balancer replacement, thanks.
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Paul from SWISCO responded:
June 30, 2016
Thanks for posting. A stamp of "29 4" usually corresponds to our 2940 option. I cannot confirm what Series you have. I can say that many Milgard windows have been known to use our Series 385 in the past. I highly recommend carefully comparing the nylon attachments that come with both the Series 350 and Series 385 with your own hardware to confirm the better match.
30" Series 385 Channel Balance
30" Series 385 Channel Balance
S385-30
$11.30
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