#2820 29L X 1/2 W
#2430 25L X 1/2 W
#2440 25L X 1/2 W
Double pane storm windows
Home Owner from Florida
Nov 7, 2020 3:30 pm
1 user uploaded image
2 Replies
Casey from SWISCO
Nov 11, 2020 8:19 am
Hello,
It looks like you have either our S351-29, with a 15-002 bottom attachment, or S390-29, with a 15-001 bottom attachment. Take a look at the image below to determine which balance you'll need. The stamp numbers you've provided will tell you the spring strength option needed for your replacement balances. Thank you!
Comparison of the S351 and S390 balance shoes.