Channel balance for older window
Hello, thank you for posting,
We should be able to assist, but to further review, we will need to see clear images of the top and bottom nylon attachments along with the bottom hook.
From there we can narrow down the series for your window. Does the length of the metal channel excluding the nylon attachments measure 28 inches long? Thank you!
Thank you,
It appears you have either the Series 351, with a 15-002 bottom attachment, or Series 390, with a 15-001 bottom attachment. Take a look at the image below to determine which balance you'll need.
Please confirm that the length of the metal channel excluding the nylon attachments measures 28 inches long. The 27 12 stamp does not directly translate to our stamp options. You will need to weigh the window sash (place on a bathroom scale) and reference the strength chart on the series product page to choose the correct stamp option to support the window sash.
Please let me know if you have any questions!
