Mi Window Balance

A home owner from Cotttonwood AZ 8326 says:
Single hung Mi Window balance
42" wide x 66" high
series 350 / 35T sh

I need one for left side, if you are inside looking out.
User submitted photos of a window balance.
Profile picture of Paul
Paul from SWISCO responded:
Your pivot shoe appears to match our 15-199, while the coil spring housing is more like our 15-150D. For the coil spring itself, see our 1/2" wide Series 160 balance. You will need the number stamped on the old spring when ordering.
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