Need help to identify part

Quick Learner from Utah

May 27, 2026 12:26 pm

I am trying to find replacement springs for a Millgard Window. I have more photos if needed. I have no photos of the spring in original position as it was broke and out of place when I first got to job site. I am in Utah and window is in Washington State. Trying to fix window for my 96 yr old aunt.

5 user uploaded images

7 Replies

Quick Learner from Kanab Utah

May 30, 2026 1:09 pm

I need to replace the channel balances. I can't find the weight of the window. The current channel balance has 24 3 FP CALDWELL stamped on it. The overall lenght of the metal track is 25".

3 user uploaded images

Bob from SWISCO

May 31, 2026 2:24 pm

Hey there. See the S380-25 or S385-25 Channel Balance. The only difference between these two balances is the shoe depth. See below. For a stamp option choose 2430.

Comparison of the S378, S380 and S385 balance shoes.

Quick Learner from Kanab Utah

Jun 1, 2026 7:02 pm

The shoe on mine measures 1" so I guess I need the S380. I didn't understand what you meant about choosing 2430 for a stamp option.

Bob from SWISCO

Jun 3, 2026 2:50 pm

If you click on the S380-25 Shop page, you'll see that to purchase it you need to select a stamp option. The stamp designates the strength of the balance. Your old balance was stamped 24-3. So in our system you choose 2430 (for a balance that can support a sash in the weight range of 15 through 15 pounds). I hope that makes sense.

Quick Learner from Kanab Utah

Jun 3, 2026 4:17 pm

Awesome!!!! Thank you

Bob from SWISCO

Jun 4, 2026 3:05 pm

My pleasure, and do let us know if you have further questions!