Replacement part

A quick learner from Mooresville NC says:

November 10, 2020

I am trying to find the replacement part as pictured. The stamp on the part is 3400 BSI. The casing is 34 inches. The string connects to the base at the bottom. The spring is 14 1/2 inches long. I am not sure of the window brand. Suggestions?

Thumbnail of the uploaded file named window.jpg

Tom from SWISCO responded:

November 16, 2020

This looks like a match for our S770-34 channel balance, though your stamp is peculiar. You will need to get your sash weight in order to determine if one of our stamp options can work for you.

A home owner from Cornelius, NC says:

March 27, 2021

I believe I have the same channel balance as the previous poster. It's also 34" long and

I believe I need to order the S770-34 also. I've included pictures of the stamp to see if you can determine the sash weight from the stamp.

Thank you,

Curt

Thumbnail of the uploaded file named DDC4CA4C-6CE5-444C-8BEC-11BA70AE2DFE.jpeg

Thumbnail of the uploaded file named 8D47E334-FBE3-46C7-9D1C-A7FE11E3FF2C.jpeg

Thumbnail of the uploaded file named 68F9D781-9099-4158-9FF8-3C622A945BE6.jpeg

Tom from SWISCO responded:

March 30, 2021

Hey, Curt. Like I mentioned in my post back in November, that stamp is very strange. You're going to have to weigh your sash to confirm which stamp option would be best for your window.

34" Series 770 Balance

S770-34

$13.77

How to replace a tilt-window channel balance.

VIDEO

WATCH >

You are a:
Located in:
Email:	(your email address will be kept private and is only used to inform you when a response has been made)
Post:
Images:
	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.