Part Identification 2630 GM and 2640 EX

Handy Person from California

Jul 23, 2025 5:22 pm

I have two broken block and tackle balance from non tilt windows. One has 2630 GM stamped on it and the other has 2640 EX stamped on it. I need help in determining which replacement parts these correspond to.

4 user uploaded images

4 Replies

Jasmine from SWISCO

Jul 24, 2025 11:24 am

Hey there,

Thanks for writing in! These two balances appear to have different attachments installed on them. Were these removed from the same window? If so, there may be a few additional details you'll need to gather so that we can provide you with an accurate replacement recommendation.

If these were not removed from the same window, please indicate which stamp belong longs to which respective balance.

Please let me me know if you have any questions!

Handy Person from California

Jul 24, 2025 7:46 pm

These were taken out of two different windows both have broken balances. The closer photos have 2640 EX stamped on them. The more zoomed out photos have 2630 GM stamped on them. The shoe also measures roughly 1" and the metal channel measures 27". Unfortunately I can't find the more closely zoomed photo's balance to measure.

Jasmine from SWISCO

Jul 25, 2025 10:14 am

The balance marked with the 2640 stamp has a winged top guide and wingless shoe like the S395-27 Channel Balance. Our 2640 stamp will support a sash weighing 19 to 26lbs.

The balances with the 2630 stamp can be replaced with the S378-27, S380-27, or S385-27. To determine which of these is the correct replacement, you'll need to measure the depth of the bottom shoe.

The 2630 stamp supports sashes weighing 13 to 19lbs.

Comparison of the S378, S380 and S385 balance shoes.