30" Window Balance - Replacement
Hello, thank you for posting,
With this combination of attachments, you could have either an S380 or S385 channel balance. You’ll need to measure as shown below. The Series 380 has a 1" bottom attachment, and the Series 385 has a 1-3/32" attachment.
When determining the length, only measure the metal channel excluding the nylon attachments. To choose the correct stamp option that determines the strength of the spring, obtain the weight of the window sash and compare to the strength chart on the product page.
Please review and let me know if you have any additional questions!
Hello,
Yes, based on the 1 inch shoe depth, you will need the S380-30 channel balance. Once you obtain the weight of the sash, compare to the strength chart on the product page to choose the correct stamp option. Let me know if you have any additional questions.