Casement window limiters
A purchasing agent from Redmond, WA says:
September 29, 2014
We have Interlock 12C-IS23 Casement windows installed at one of our resort locations. We are looking for a limit device that will limit the venting of the window to less than 4
Dave from SWISCO responded:
September 30, 2014
We do carry a sash stop/limit device for casement windows that may work for you. See our 39-398 and the video below. On the particular casement window shown in the video, the limited opening is approximately 3". The limited opening could vary in your casement window depending on the type of window and how it is installed.