2600 BSI

Question

Marking is 2600 BSI (maybe BS1 or BSL) for the bottom sash and 2200 BSI for the the upper sash.    Looks like the balance shoe is damaged on some of my windows also.  These are tilt, vinal windows.  Have 8 windows need to replace all 32 balances (8 left lower, 8 left upper, 8 right lower, 8 right upper).  Would replace the shoes too if they are available and don't come with the the balances.

Emily · Accepted Answer

Hi there!

Thank you for reaching out to us. Your balance looks like a match for the Series 770 and 15-129 pivot shoe (sold separately). Note that the S770 is designed to screw in at the top of the window track. If your balance installs differently, please let us know how.

You will also need to weigh the window sash on a scale to determine the correct stamp option. A reference chart is available under each length of the Series 770 product description.

Please let us know if you have any questions.