How to determine sash weight for S900-29

A handy person from Sarasota FL says:
April 11, 2020
No color tips anywhere. Standard contractor grade windows.
Thumbnail of the uploaded file named IMG_20200411_180808.jpg
Thumbnail of the uploaded file named IMG_20200411_180804.jpg
Thumbnail of the uploaded file named IMG_20200411_180757.jpg
Profile picture of Tom
Tom from SWISCO responded:
April 14, 2020

Hello! It looks like you have tilt window spiral balances. Without a color tip, your only option is to remove the sash from the frame and place it on a scale. Then, look at the chart we show on the S900-29 store page. That tells you how much weight each color tip option supports.
A handy person from Sarasota FL says:
April 14, 2020
Well that's easy, but is that all there is to it? What about friction and the like?
Profile picture of Tom
Tom from SWISCO responded:
April 14, 2020

Yep! Friction is accounted for. The only thing that I can see causing a problem is if maybe you changed to a ticker weatherstripping at any point in the past, but that doesn't really have anything to do with the balances.
29" Series 900 Spiral Balance
29" Series 900 Spiral Balance
S900-29
$9.15
How to replace a tilt window spiral balance.
How to replace a tilt window spiral balance.
VIDEO
WATCH >
How to Identify a Replacement Spiral Balance
How to Identify a Replacement Spiral Balance
VIDEO
WATCH >
How to choose the proper spiral balance tip color
How to choose the proper spiral balance tip color
GUIDE
READ >
How to adjust a spiral balance on a tilt window
How to adjust a spiral balance on a tilt window
GUIDE
READ >
Reply to Thread
Use this form to ask a follow-up question or to share your experience regarding this subject.
(your email address will be kept private and is only used to inform you when a response has been made)
Current wait time is 3-4 business days
We promise that one of our experts will personally get back to you as soon as they are able. Thank you very much for your patience and understanding. If your inquiry is time-sensitive, please feel free to reach us at (888) 991-1929 or at help@swisco.com.