Need to identify problem--tilting window

Question

The window i weighed at 30lb. Each spring in the 2 spring units are marked 7.5lb 35 (maybe 35 is length ?? ) the springs are 1/2" wide.

I removed both left and right side and to my amaze the springs (2 per side ) were not broken. (no cracks in the coil was visible) .

The window has begun to slide down by itself so i thought a spring was cracked but that is not the case. The removal and reinstall of the springs seems to help.

Am i just imagining it ??

would like get part numbers for replacement springs and also maybe the entire assemblies.

I am very handy with tools and a homeowner , but this has me stumped.

note at no time did either the left or right side of the coil unit slip off of the bottom of the window while i was experiencing the auto closing of the window

Jasmine · Accepted Answer

Thanks for reaching out. Although, there is not visible damage to the hardware. If it is no longer holding up the window, it is like that you'll need to replace the hardware.

Your assembly looks a lot like our 15-252 Inverted Universal Dual Support. Carefully review and compare this to your original hardware to confirm that this is the correct replacement.

Detail of 15-252

For the coil spring, I recommend part S160-7.

If you are looking to replace the bracket, take a look at part 16-033.