Casey from SWISCO responded:
August 12, 2011
Hello,
This is a SWISCO Series 390 balance. Please check on the length of the balance, exclude fittings for this measure, I believe it may measure 31". Next, we need the weight of the window sash. Please remove the window sash and place it on a scale to get us the weight in pounds. |
Tom from SWISCO responded:
August 18, 2011
Thank you.
It seems your replacement will be the S390-31 Channel Balance, with the 3040 stamp. |