Window balance 21 12 BSI

A home owner from USA says:
Good Morning, I am in need of 2 window balances ( see photos) . It is a 1/2 " cannel-- 22" long--sash dimension outside is 24x50 "--weight is 32 lbs-- the channel has 2 springs inside. For the ends please see photos. Can you help? Thank you, Bert
User submitted photos of a window balance.
Profile picture of Tom
Tom from SWISCO responded:
This could be either our Series 390 or Series 351 channel balance, depending on the size of the shoe. Look them over and see what you think.
A quick learner from Stuart Fl. says:

Thank you for your prompt reply. My window is wood with plastic coating - so, my pick is series # 351.#2165 (30 to 34 lbs. # 15-002 and 19-002 shoe's.

Thank you, Bert

A quick learner from Stuart Fl. says:

To ALL employee's at Swisco : Thank you for a fast and efficient service. The ballast is perfect.

Good Luck to ALL.

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.