Hello,
The top nylon fitting on one of balance springs has broken and I would like to replace the shash springs.
My house is 20 years old and with the original windows still installed. The Sash Spring is 30 inches long. There are markings that read 2930 BS J7 ( I'm not sure about the J7 but the Spring 4.jpeg has the identification number stamped on it.
I have attached some pics for your review.
Best Regards,
Dave
2930 BS J7 Balance Help
Quick Learner from Coral Springs, Florida
Nov 17, 2020 3:06 pm
4 user uploaded images
2 Replies
Tom from SWISCO
Nov 23, 2020 9:18 am
Based on your photos, you have either our S380-30 or S385-30. The only difference between them is the size of the bottom fitting, which is indicated on their respective store pages. You'll need to measure your bottom fitting to confirm which one is the better match.
Comparison of the S378, S380 and S385 balance shoes.
