Dave Sr. from SWISCO responded:
December 3, 2014
Take a close look at your window tracking. Do you have a four-bar hinge set up like our 36-023HD? If you do, see if you have that brass shoe with an adjustment screw; that could add some "drag" to the operation of the window. We also have the 39-398 sash stop device which will only allow to open a few inches. (I see you are using chain to as a limit device).
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Dave Sr. from SWISCO responded:
December 4, 2014
Take a look on the video for the 39-398 below and see if you could install this stop device into your window track.
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Paul from SWISCO responded:
December 10, 2014
The hardware Dave has suggested does just what you describe. I'm not sure what else we have that could work in this capacity.
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