I have some older vinyl replacement windows that have handles on the bottom sash which allows you to open the window. There is one screwed to the window on each side of the bottom sash. The handles are nothing more than a vinyl piece that mounts on the bottom sash and when the window is closed, you can only see the lip of the handle that allows you to grab on to providing you a means of opening and closing the window. I don't know who the manufacturer of the window is but am trying t locate these handles as they are breaking off from age.
These hard plastic handles are 2 and 7/8" long. The mounting screw holes are 2" center to center. On the side of the handle where the screw holes are, the thickness is 1/8" tapering down to 1/16". This is the side that when the window is closed, this part of the handle is between the two sides of the window frame. The top side of the handle is 3/16" thick and is 7/8" in height.