Need the covers

Thanks or posting. It depends on the thickness of your coil springs. I am assuming that there are two coils on each side of the window sash. If they are 1/2" thick, you can use the 15-150D support; if they are 3/8", use the 15-204. It looks to me however that your coil springs may be damaged. Check this to be safe. If so, we can help you replace them, but we'll need the thickness of the coil springs and a picture of the pivot shoe that they attach to further down the track. The video below shows how to remove and replace these systems. Check it out and let me know if you have any questions.

Thanks! So, we don't sell the assembly as one product, but we do sell its components separately. See our 15-199 pivot shoe to start, as well as either our 1/2" thick Series 160 or 3/8" thick Series 165 spring.

I unfortunately can't determine your spring size based on these photos. You'll have to measure your originals as carefully as you can and pick accordingly.