Hardware advice for custom screens

A home owner from Charlotte, NC says:
I need advice on how to best attach screens to my double hung aluminum clad wood windows. They are all double hung with a 3/8" channel on the top and both sides. Should I use 4 plungers per window?
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Tom from SWISCO responded:

Thank you for submitting your inquiry to our discussion board.

Are the pull pins going into the track groove you are showing?

If so, then yes, 4 plungers per window will work.

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