coil window balance

Question

Need a coil window balance for the left and right side of my window. Here is the measurement of window. 27 3/4 Wide by 37 1/4 Height. These are the other numbers on window tag T001/02 J37725/001 3020 CBM INC. GC
W4420

Jasmine · Accepted Answer

Thanks for reaching out! Your exact pivot shoe has been discontinued and is no longer available but the good news is that we do have a replacement that will work just as well. We suggest using our 15-177 pivot shoe to replace the coil balance shoe you have. Take a look over the dimensions below to confirm that this is the right replacement for your existing coil balance shoe.

Alternate image for 15-177

These are compatible with the 1/2" thick Series 152 coil balance springs. To determine the correct spring strength for a particular sash, you'll need to look for any stamps/markings on the metal coil(s) in the window. If there are no stamps/markings or they are hard to read, you'll need to obtain the exact weight of your sash. Once you have the sash weight, you'll divide it by the number of coils in the window.

You'll need to secure the coil to the shoe using the 33-072.

You may also need the 15-143 coil bushing and the 15-144 coil bushing cap.