15-004 vs. 15-005

A quick learner says:
August 18, 2020
I know that 15-004 is 3/32" longer. Is the longer model recommended to slighter wider window side rail gap? Just trying to determine which one to buy.
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Bob from SWISCO responded:
August 24, 2020

The deeper shoe is indeed meant to account for a deeper window jamb. A shoe too 'shallow' for a window jamb will result in the window sash rocking from side to side. Even that 3/32" makes a difference. 
Winged Channel Balance Shoe, 1" Depth
Winged Channel Balance Shoe, 1" Depth
15-005
$0.74
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