Window tensioners there's no names or numbers on the windows

A handy person says:
January 28, 2017
The windows are w31 x 62 hi double Hong
User submitted photos of a window balance.
Profile picture of Paul
Paul from SWISCO responded:
February 3, 2017
Your balance system has been discontinued by the manufacturer and has been replaced with the 15-140 balance shoe and Series 150 coil spring. You will need the number stamped on the old springs when ordering.
Coil Bushing
Coil Bushing
15-143
$0.97
Coil Bushing Cap
Coil Bushing Cap
15-144
$0.70
Coil Balance Shoe
Coil Balance Shoe
15-140
$3.07
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