Replacement window balances : SWISCO.com

Home Owner from Hereford, AZ

Jul 17, 2025 10:58 am

Window balances currently in the manufactured home are 18 years old and stick during operation. The metal strut is 27" long (see photo). Imprinted on the strut are: 26 3 BSI NF. There are no other markings. The plastic end pieces are attached with two rivets at the end with the imprint and 1 rivet at the other end. Any assistance in identifying the appropriate replacement will be appreciated.

5 user uploaded images

6 Replies

Emily from SWISCO

Jul 22, 2025 11:23 am

Hi there!

We're happy to help with this. We would like to see an image of the inside of the balance’s metal channel, where the innerspring connects to the pulley mechanism; this connection is located in the middle of the channel. Additionally, can you measure the bottom shoe as shown below and tell us what you get?

Profile view of a winged balance attachment

Home Owner from Hereford, AZ

Jul 22, 2025 3:40 pm

Depth: 1 1/8"
Wing: 3/8"

Requested photo attached.

1 user uploaded image

Emily from SWISCO

Jul 22, 2025 3:58 pm

Thank you kindly! Take a look at the S380-27 and S385-27 with the 2630 stamp option. The difference between them is the depth of the bottom shoe, as shown below. We don't have a balance with a winged 1-1/8" deep shoe, so you may have the Series 385 with a 1-3/32" deep shoe. Review the specifications and see what you think.

Comparison of the S378, S380 and S385 balance shoes.

Home Owner from Hereford, AZ

Jul 22, 2025 4:59 pm

Thank you. I believe the S385-27 is the one I should order.
For the option: 26 3 is stamped on the balance. Would that be option 2630?
How do I order a pair of balances?

Emily from SWISCO

Jul 23, 2025 8:12 am

Yes, you'd want to select the 2630 stamp option. You can place an order directly on our website at your convenience or by calling (888) 991-1929.