Windows keeps falling

Hello,

Your photos resemble the 15-087 housing pivot, which uses the S180 coil springs and other related items from the product page. With that being said, we can't make any guarantees with the hardware still installed in the window. I'd recommend removing your coil balance assembly to confirm that the specifications match our parts. You'll also need to locate the numbers stamped on the original coil springs to choose the corresponding strength options for the S180 coils. Thanks for posting!  

Detail of 15-087

Series 180 coil balance diagram