15 4 DR Caldwell balance

A quick learner from Pahrump nevada says:
Need qty 2 sashes caldwell 15 4 dr caldwell, it appears to have a hook on each that attach to frame, I want to be sure I'm purchasing the right item
Mary
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Emily from SWISCO responded:

Hi, Mary.

Your balance appears to be a match for our S380-16 or S385-16. These two parts look identical at first glance but the important difference is the bottom shoe depth. The Series 380 has a 1" deep shoe and the Series 385 has a 1-3/32" deep shoe. You'll need to measure as shown below to determine the best fit. You will also need the 1540 strength option.

If you have any questions just let me know!

Comparison of the S380 and S385 balance shoes.
Comparison of the S380 and S385 balance shoes.
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