Hello:
I have about 35 year old sliding windows that need replacement of the balance guides. Attaching the photos. They are 22 inch long, with the balance of 21 inch long. I found similar Caldwell Series 300 Channel Block and Tackle Window balance, but not sure if they have to be Stamp 21-1, 21-2, 21-3 or 21-4. Please advise. Thank you, Anna
Hello,
With this combination of attachments, you could have either the S380-22 or S385-22 channel balance. You’ll need to measure as shown below. The Series 380 has a 1" bottom attachment, and the Series 385 has a 1-3/32" attachment. You'll also need to choose the strength options that correspond to the numbers stamp on your metal channels (ex. 2110, 2120, 2130, 2140). Thank you and let us know if you have any other questions or concerns.
