Hello,
I am looking to replace both channel balances on 2 windows. My existing balances measure 25" long but I can't decide which model because of the shoe depth - and - which weight. The base seems to be 1 1/8" deep. And when I weighed the lower window panel it is 16 lbs. I actually already placed an order (order 1121170) for the S351-25, model 2440 but I think I may have picked the wrong one!! Maybe I should have gone for the S390-25, model 2430. Help!
Sara M