Coil balance and support

Question

Hi- I need help replacing the coil balance and support (and potentially shoe, as well) in one side of a vinyl window. The coil is stamped E7 and measures 1/2" wide. Is the S150-7 the correct replacement? And if so, which support matches that? And finally, will I also need to replace the shoe? Mine measures the same in width and depth as the (Series 150) 15-140 shoe but is only 1 1/2" in height. Pictures attached and can supply more images or details, if needed. Thank you!

Bob · Accepted Answer

Hey there. This actually looks like an older version of the S140-07 7 pound spring system to me. Just ensure the pivot shoe width and thickness match what we show below.

Alternate image for S140-7