I need to order the following please:
Labels/ length/ number of pieces
2940 bsi on /30 inches/ 4 pieces
3440 bsi op /35 inches/ 16 pieces
2330 bsi e /24 inches/ 4 pieces
3607 bsi nk /37 inches/ 4 pieces
2906 bsi nk /30 inches/ 8 pieces
1705 bsi ol /18 inches/ 2 pieces
Thank you
Window springs
Home Owner from Florida
Sep 19, 2020 6:00 pm
5 user uploaded images
2 Replies
Casey from SWISCO
Sep 24, 2020 11:43 am
Hello,
With this combination of attachments, you could have either an S380 or S385 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. From there, you'll choose the length of your metal channel and use the stamp number to choose the necessary spring strength option.
Thank you and let us know if you have any other questions or concerns.
Comparison of the S378, S380 and S385 balance shoes.
