Atrium Window Repair
Quick Learner from Las Vegas
Nov 28, 2025 3:49 pm
The only marking I see is the printed "28 3 GV CMC 2"
5 user uploaded images
2 Replies
Jasmine from SWISCO
Dec 2, 2025 11:21 am
Thanks for posting! Your window balances can be replaced with the S380-29 or the S385-29. To determine if this is the correct replacement, you'll need to confirm the depth of your bottom shoe.
Our 2830 stamp should work in place of yours. It will support a sash weighing 16 to 23lbs.
Comparison of the S378, S380 and S385 balance shoes.
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