Balance Spring for Window

Hello, thank you for posting,

Please review the 15-102 double side load carrier along with the Series 145 coil spring. Compare the dimensions to confirm a good fit! The original spring should have a number stamped into the metal that indicates the weighted option needed to support the sash.

For the lock, compare the dimensions of the 90-252 latch that uses the 90-253 cover. Let us know what you think and if you have any additional questions! 

Hello, 

The window should have one on each side with a coil spring. For a 6 pound window, you can use (1) S145-3 coil spring on each side of the window which fits into the 15-102 support. Let me know if you have any additional questions!