Coil balance and window hardware

Hey there!

Thanks for reaching out to us. The 15-087 looks like a match. This is used with the 15-086 tandem coil housing and Series 180 coil springs. It looks like your old hardware is stamped with the numbers 6 and 7 which means you'd want the S180-06 6-pound spring and S180-07 7-pound spring. For a new mounting bracket, see the 16-031. The video below will show you how to remove your hardware using the cutout method. 

Take a look at the specifications for the mentioned parts and let us know if you have any questions.