I need new balances for my Blomberg single hung non tilt windows. Overall window is 34" x 53". Each sash is 34" x 26.5" double pane glass. I do not know what it weights. I have removed some of the old balances and noticed that there were two different numbers on the same size windows so I am not sure which one is correct. One of the numbers is 2390 BSI DL 30 and the other number is 2350 327. I have attached pictures of the ends and two of the numbers. The metal channel is 24" long, 9/16" x 5/8". I have a total of 12 windows of the same size. What I would like to do is order one pair to start, then after I install and they work I would like to order 11 more pairs. Windows are dark metal frame double glass panels with cross dividers between the glass. Please help me determine the correct balance to order. Also I need a dozen take out clips.
