weight variation

A professional from CO says:
August 12, 2021
Product Code: S390-21

Your max weight stamp available is "2060 27 to 30 lbs"
I have a 2120 stamp. I am unsure what the weight is with that stamp.

2120 doesn't seem to be available on your site. My question is will 2060 suffice or can I special order 2120?
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Emily from SWISCO responded:
August 17, 2021

Hi there!

When determining length, make sure to include only the metal channel in your measurement. Your stamp reads "2120", which means the length of your metal channel should measure 22" not 21". 

If your metal channel does measure as 22", then you'll need our S390-22 with a stamp option of 2120. 

If you have any further questions just let us know. 
A professional from CO says:
August 21, 2021
wow, ty I just measured them again and sure enough, they are 22", smh.
Thank you so much for your response.
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Emily from SWISCO responded:
August 23, 2021

Not a problem! Please let us know if you needed anything else.
A professional from CO says:
September 20, 2021
Hi Emily,
I received your product and they seemed to be perfect until I opened the windows to test after I installed them. The strangest thing, I have 2 identical windows and purchased 4 S390-22 with a stamp option of 2120. Exact replacement. Install was simple and they seemed to be fine until I raised both windows to full open. One window sat perfectly all the way open but the second window fell about 6 inches and does so every time I try to open it fully. Do you have any suggestions that may help? I was thinking about exchanging them with a higher stamp option.

Thank you,

Frank.
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Emily from SWISCO responded:
September 21, 2021

Hey, Frank.

I'm sorry to hear you're having trouble! It sounds like you might have too weak of a stamp option. We recommend weighing your sash on a scale to confirm. Let us know what you find or if you have any other questions. 
21" Series 390 Channel Balance
21" Series 390 Channel Balance
S390-21
$9.38
22" Series 390 Channel Balance
22" Series 390 Channel Balance
S390-22
$9.59
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