I made this to close the gap in the R2x enclosure hood where the feed tubes and wiring pass through. It has tabs that slide into a gap in the rear enclosure panel -- no fasteners required! I'm using it with fume filter http://www.thingiverse.com/thing:125264 and corner hole-fillers http://www.thingiverse.com/thing:151513 by RodLaird. The ABS smell is almost entirely gone, and the build chamber stays a bit warmer (45-50C). I have attached a version with a flexible bellows section, and a flat version. I use the bellows version to give the feed tubes more play, but it may be difficult to print at lower resolutions. This is a fairly large single piece -- adhesion may be an issue on warped build plates. I printed mine at 0.2mm and 30% linear infill on Kapton cleaned with isopropyl alcohol at 115C HBP temp, and experienced very minor edge-lift. (Some warping is ok.) You may be able to do better. I have scaled up the STL to 100.5% size to compensate for ABS thermal shrink. This gives me an excellent fit. The bellows will probably not print well at resolutions rougher than 0.2mm, or if you scale down the piece, since the walls are 0.4mm thick.