Help with channel balance : SWISCO.com

Home Owner from Madison, WI

Dec 19, 2025 1:50 pm

Hi, can you help me determine the correct replacement part?
Pictures attached. Thank you!
- Non-tilt channel balance
- 1/2" wide
- 25" long
- 2420 imprint on the channel

5 user uploaded images

7 Replies

Emily from SWISCO

Dec 22, 2025 1:24 pm

Hi there!

Thanks for reaching out to us. Take a look at the S351-25 and S390-25 channel balances with the 2420 stamp option. The important difference is the depth of the bottom shoe, as shown below.

The other part in your photos is called a top sash guide, but yours is too damaged to ID. We'll need to see photos of an intact version removed from the window.

Comparison of the S351 and S390 balance shoes.

Home Owner from Madison, WI

Dec 29, 2025 1:16 pm

Thanks so much! Regarding the top sash guide, here is a photo of another that is unbroken

3 user uploaded images

Emily from SWISCO

Dec 29, 2025 1:53 pm

Thank you kindly! This top sash guide was discontinued and is no longer available, but please allow me to consult one of our senior experts. We'll reach back out ASAP.

Paul from SWISCO

Dec 30, 2025 9:04 am

The manufacturer added a section indicating that a wheel can be included for their sliding windows. They did this to reduce production costs. The 18-110B now serves dual purposes for both sliding and double-hung windows. Take a look at the specifications and see what you think.

Alternate view of 18-110B

Home Owner from Madison, WI

Dec 31, 2025 2:15 pm

Thank you both so much! The ability to receive your help choosing the correct parts for my window is so appreciated.
Happy new year

Paul from SWISCO

Jan 2, 2026 7:46 am

No problem! I'm happy we could help. Good luck with the repair, and happy New Year!