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I need to prevent these windows from opening too wide.

I have a plan to drill into the bracket and insert a bolt to limit the range of motion, but before I start modifying I want to rule out a built in limiting/control mechanism I might be missing.

There is a clip and an unused hole in one area, but I don't see any way to use them to achieve what I need.

full crank mechanism

close up of rear section, possible adjusters, clip and unused hole

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  • The clip might (or might not) be a limiter to affect whether the window opens to "egress" or further for cleaning (while having less clear area than at the egress opening size.) I have different windows with a somewhat similar clip. Speaking of which, if they are egress windows, you have to proceed carefully or may not be able to legally modify them this way.
    – Ecnerwal
    Apr 10 '21 at 17:13
  • Based on their locations they are not suitable for egress, even in an emergency, and that's related to why I need to limit them, they are very dangerous as they currently are. Apr 10 '21 at 17:47
  • Just because the windows open, does not mean you have to climb through them...
    – Solar Mike
    Apr 10 '21 at 18:58
  • Any chance you can add a decorative chain to the frame opposite the hinges and window to stop the opening process?
    – JACK
    Apr 10 '21 at 18:59
  • @SolarMike I'll tell my 2yr old Apr 10 '21 at 21:38

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