Tom from SWISCO responded:
February 17, 2020
Hello! I agree with your list of parts. Our 15-087 shoe, 15-086 secondary housing, 16-024 bracket, and Series 180 coil spring should work well for your window. However, if your sash is only 18 pounds, then using four 8 pound springs would be too strong. Instead, I recommend using one 4 pound spring and one 5 pound spring on each side. That adds up to 9 pounds per side, which should be perfect for your sash weight of 18 pounds. That'd be our S180-4 and S180-5. I'm not as certain about your tilt latch. Would you be able to remove one undamaged version from the window and show us a few photos of it by itself? I'd especially like to see it from the side and from underneath. Thank you! |