Certainteed Devon window sash support replacement parts
A home owner from USA says:
October 27, 2015
I am having a problem with my window. It will not stay open....when raised, it immediately falls shut. I am sending photos of both sides of the window. I know I need a lance spring cover for the left side....I'm not sure if I need any other part....and need instructions on how to get the springs attached to the tracks.
Paul from SWISCO responded:
October 28, 2015
It sounds like the coil springs are broken. Based on the hardware I see, you may have our Series 170 or Series 171. I've associated other parts to this discussion that may interest you, which you can see on the right side of this page. However keep in mind that you only need to replace the parts that are broken. If a part in your balance system is undamaged, there's no reason you shouldn't keep using it.
As for removal instructions, check out the video below.