Lauren from SWISCO responded:
January 12, 2024
Hello, thank you for posting, For a coil spring marked with "409", take a look at the S170-409 that can support 9 pounds of weight. Together with the coil on the other side, the total sash weight should weight 18 pounds. Please note regarding the 15-192 pivot shoe, we have had some customers report that they needed to shave down the front aligners on the shoe to fit it into the window channel. Review the related items on the page for new covers and balance drums if needed. If you have different size windows, I would recommend checking the stamping on each coil as they may differ due to the weight of the window sash. Let me know if you have any additional questions! |