How well does 26-387 secure a double hung window?

A home owner from Santa Monica, CA says:
I'm interested in purchasing your 26387 vent lock kit. Can you tell me how well it secures a double hung window? Thanks, Julia
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Tom from SWISCO responded:
Thanks for posting on our discussion board, Julia! Our 26-387, Face Mount Single Action Vent Lock Kit, works very well for double hung windows. You should take a look at our tutorial video for how to install this very same kit. It should grant you some insight as to how well it works.
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