Searching for 3350 BSI OG

Hello!

Thanks for reaching out to us. It sounds like you may be looking for a channel balance based on the title of your post. I'm afraid the stamp doesn't help us ID it though. We can still help but we would need you to remove an undamaged balance from the window along with any attachments that go with it. Check out the related videos on this page and let us know if you have any questions.