need help for replacement. Blomberg Window, single hung, stamped 2740 as shown, 28" long, channel width 1/2"
Bob from SWISCO responded:
July 6, 2020
See either our S351-28 or S390-28. 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. You'll need a stamp option of 2740.