Anyone know what this is?

yeah youre right. i didnt think about that. my second guess is that the part on the left is a mold from the part on the right. so theyll just keep using the left part to keep making parts like the one on the right. the face will be the same but theyll start from scratch on the back of the enclosure according to the different car application. that orange crap might be some kind of mold release if thats the case.always looking for new info and willing to give it

It looks like a two piece mold. Maybe they're using it to make ABS or other plastic enclosure fronts in quantity. Where'd you get the picture from?

tooling gel and gelcoat, thats how you use a mold to make a part, in this case the face of the box. You can get them mixed in any color you want, and the parts will come out absolutely flawless if you know what you are doing. Looks like someone laid the gelcoat on too thin in the corners, it is chipped a little and raw fiberglass is showing through.