Replacement

Question

I don't know what the plastic part is called that fell out. It's a small plastic piece that goes in the window

Jasmine · Accepted Answer

Thanks for writing in! The part missing from your sash appears to be a vent latch or sash stop of some variation. To determine if there is a suitable replacement we can supply you with, I'll need to see the hardware removed from the sash.

Take a look at the video tutorial below for an idea on how to remove the stop.