Have PGT windows in house, house was built 20 yrs ago. Need four Channel balances

A quick learner from Sarasota, Fl says:
April 13, 2017
Windows outside frame dimensions are 43" x 61-1/2". The channel balance I am holding in my hand measures 30-1/16" metal plus nylon piece on each end. This appears to be Series 395 with option 3630. Will need four of these items if they are available.

Thank you
Ralph
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Tom from SWISCO responded:
April 18, 2017
Can you confirm the length of the metal channel? Based on your stamp, it should be 37" long. I would double check both your stamp and the length of the metal channel to confirm which Series 395 balance is best for you.
A quick learner from sarasota, fl says:
April 18, 2017
I am not sure of the part number but the metal channel is 30 and 1/16th
Ralph egolf
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Tom from SWISCO responded:
April 20, 2017
Gotcha, in that case I think your stamp of 3630 may be incorrect. I would triple check it just in case. This isn't a part number, it's a stamp that indicates the spring strength calibration.
PGT Top Sash Guide
PGT Top Sash Guide
18-015
$2.98
31" Series 395 Channel Balance
31" Series 395 Channel Balance
S395-31
$11.30
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