David has a good suggestion, and it gives you complete control of how the glass looks.   Here is another idea.   If your version allows, this trick might work for you, and it can work in other situations too.   Draw a room divider wall parallel to the wall the class butts into. It only needs to be about 3" -- mine is larger here so it may be seen.  Now move it so it's 1/64" away from the parallel wall.     Drag the glass wall over and it will hi