Vinyl windows need coil spring parts

Question

Hello, I need to replace my broken coil spring on my single hung tilt in windows. I've removed them and attached pictures. There is a gold label stuck to the left track that reads: AMERICAN NATIONAL STANDARDS INSTITUTE - MFR Code: MTL-12 / Series GA 7050(7000/7100) SH

AAMADMA/CSA 20101/I.S.2/A440-05 0AH-R40-1219x1829%20(48x72) 0AH-R40*-1829 C3%971829%20(72x72)(MULL)%0AH-R40*-1207%C3%972127%20(48x84)(MULL)

These will be builders grade

Thank you

Kevin

Emily · Accepted Answer

Thanks for reaching out to us, Kevin! Our 15-199 pivot shoe looks like a good match. Can you measure the width of the coil spring band and tell me what you find? I'm thinking it may be 3/8" but I'd like to confirm that.

I also recommend checking the spring for a stamp or code. That sometimes tells us what weight calibration you'll need. If there aren't any markings, I will need to know the exact weight of the window sash.