OEM -paper or plastic?

I'm 99% sure there plastic

100% plastic

Plasic was better too, since if I remember correctly it folded slightly so it was easier to install. I am curently making my own since I am disscusted with the fact that the cardboard box won't go in from the front. I plan on making it so I can screw it together inside the dash instead of having to remove the blower motor to install the cardboard insert. I know it won't be the last time the box will have to come out and I want it to come out easier. We'll see how good my fab skills are!

Many thanks....