Need to replace window balancers

A quick learner from Amenia, NY says:
I could not remove the bottom as there are no cutouts. I need anything that will work it doesn't have to be the same. I will create cutouts if I have to. I have no knowledge of windows at all but I am very handy
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Emily from SWISCO responded:

Hi there!

Your pivot shoe appears to match our 15-087 that's designed to be used with the Series 180 coil springs. The 7 stamped number on your shoe indicates the coil weight so I recommend our S180-7. I also posted a video below that will demonstrate how to remove your hardware using the cut out method. 

How to Remove a Pivot Shoe (Cutout Method)
How to Remove a Pivot Shoe (Cutout Method)
VIDEO
WATCH >
How to replace a window coil balance
How to replace a window coil balance
VIDEO
WATCH >
How to remove window pivot shoes
How to remove window pivot shoes
VIDEO
WATCH >
Anatomy of a tilt window
Anatomy of a tilt window
VIDEO
WATCH >
How to Replace a Triple Coil Balance System
How to Replace a Triple Coil Balance System
VIDEO
WATCH >
Removing a Triple Coil Window Balance
Removing a Triple Coil Window Balance
GUIDE
READ >
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