My channel Balances is 16 inches long metal to metal, 1/2 inch wide. There is a number stamped on the channel (15D) it is in the last picture. I am looking to purchased (2) for my bathroom window. In looking at you stock pictures my channel Balances looks like your part number
( S351-16 ). I looked at this part on line and did not know what the options were listed on web page.1510,1520,1530,1540,1550. Any help would be appreciated. Thank you very much.
Ted
Thanks for writing in. This certainly looks like either a S351-16 or an S390-16. The only difference between these two balances is the 'depth' of the bottom nylon shoe, so compare both with your old hardware to see what matches best. The stamp options merely indicate the calibration of the spring inside the balance. Your balance's stamp code of 15D conforms to our stamp option of 1540, which is for a window sash in the weight range of 12 through 13 lbs. Let me know if you have any other questions.
