@05a078bf I have no idea, but probably not. I mean, it's a sheet of glass, so that's an additional layer between you and the CRT gun, so there's that I guess. 🤷‍♂️ 

 @256f7651 

I think there's, like, leaded glass that absorbs radiation more? But yeah... kinda doubt these filters would be made of that 🤷‍♂️