>Even when you put a glass panel in the window, you have silicon holding the glass in. We tested all these different brands of silicon to try to find ones that had low levels of phthalates. It was a crazy amount of detail that we went to, but it was really worth it.

Silicone holds the glass panel. Silicon is the glass itself. Yale editors, do your job. She worked "a crazy amount of details", and so can you!