A quick learner from Kensington N.H. says:
August 4, 2014
Two clips that stop the window from opening up over about 3 or 4 in.
Dave from SWISCO responded:
August 5, 2014
Depending on how old your windows are, your vent locks may not be available any longer. If you'd like, send us a photo of your part and we will try to identify it. Also take a look at our "after market" vent lock, the 26-387. You can install that on your window if your vent is not available. See the video below for instructions how.
A quick learner says:
August 6, 2014
Devon 11 window here is the picture of the window clip. Let me know if you have them in stock and how much they are.
Tom from SWISCO responded:
August 7, 2014
Ah, perfect, thank you. This looks more like our 26-122. Check it out and see what you think.