About this 3D model
Hanger allows you to hang your filament spools on the rod in your closet. Triskite also make a derivative that has a couple other sizes for those who bought filament from someone other than Makerbot. http://www.thingiverse.com/thing:50272 Triskite has now made a derivative with dual hooks to prevent sagging at the neck of the hanger: http://www.thingiverse.com/thing:75720