This window is 26.5 H x 37.5 W it looks like 2 window balance springs per side. DMC 45635 the spring coil says #6. I'm propping window open with pipe currently
Casey from SWISCO responded:
October 18, 2021
Hello,
This appears to be our 15-087 housing shoe, which uses our Series 180 coil springs. Look over the parts and related items to see if the specifications match your original hardware. Thank you!