Filament Dry Box Add-on - Interior Filament Port Filter / Silica Gel Container / Holder

These are screw together filament port filter containers which can hold small silica gel packs or filament filter / cleaning cloth. These were designed to be applied to the top lid mounts on this filament dry box (http://www.thingiverse.com/thing:961881). A 1.75mm and 3mm version has been provided. In my box I had to dremel the plastic inner rim to fit the curve of the interior filter box; if I had known prior that I was going to use this filament port filter I would have placed the holes a c