21 inch channel balance

Contractor from Maryland
has the following numbers and letters marked on it. 1121 B.S.I. 022306. 21" long end to end metal part 19 6/16" width of open part 11/16"
thanks
3 Replies
Casey
Casey from SWISCO
SWISCO
Expert

Hi there, thank you for writing in. I'm going to have one of our senior experts take a look at this. We will be in touch shortly! We thank you for your patience. 

Casey
Casey from SWISCO
SWISCO
Expert

Thank you for your patience. This appears to be an Andersen 200 Series Tilt and Wash window balance. May we please have the width and the height of the sash's visible glass? This will help us to determine the best replacement part. 

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