High Temp Print Warning

We have an X1E at work and since the shop is a space that is shared by many people I wanted to have a warning sign for the printer door to help prevent a print being ruined if someone were to take a peek while printing with a high temperature filament. The back is slotted so that it can just slide onto the door handle. I printed with PLA since it's outside the chamber so even when the chamber is heated it's not affected. I oriented it with the text down on a textured PEI plate and the little bit of bridging over the slot printed just fine without supports.