confirm Channel Balance part number - Option

A handy person from British Columbia, Canada says:
July 1, 2022
The Channel Balancer we need to replace has "UNIQUE 20-E-50" stenciled on it. Looks like the date manufactured is 02-05-97.

Can you please let us know what the Option to go with the part number would be.

Thanks, Trevor.
Profile picture of Tom
Tom from SWISCO responded:
July 6, 2022

Hello! Your old stamp of 20-E-50 should correspond to our 2050 option. Two balances with this stamp can carry sashes weighing 23 through 27 pounds, so if you have any doubts you can always weigh your sash to see if it falls in that range. If it does then you're good to go.
21" Series 390 Channel Balance
21" Series 390 Channel Balance
S390-21
$9.38
How to Replace a Non-Tilt Channel Balance
How to Replace a Non-Tilt Channel Balance
VIDEO
WATCH >
How to Repair a Jammed Window
How to Repair a Jammed Window
VIDEO
WATCH >
How to Identify Replacement Channel Balances
How to Identify Replacement Channel Balances
VIDEO
WATCH >
How to replace a non-tilt channel balance
How to replace a non-tilt channel balance
GUIDE
READ >
Choosing a Non-tilt Channel Balance: What Will We Need?
Choosing a Non-tilt Channel Balance: What Will We Need?
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.