Don't work on glass whiteboards
Your review: I purchased glass whiteboards from Global Industrial from 2 different brands. I then purchased these magnetic trays to adhere to the whiteboards. The magnets that these trays use are not strong enough to adhere to the metal backing on the glass whiteboards. I am not sure what product these are made for if they are not made strong enough to stick to the whiteboards they are designed for. I had to send them back.
Pros: they look good they are very simple
Cons: they don't do what they are designed to do