Skirt or foot for hiding the hole in the floor, where the pipes (or tubes in my case) come out of the floor and go to the radiator. You will need to print two of these to make a complete foot / skirt.This model should be printed with NO SUPPORT STRUCTURE, as the support has been modeled already. I wasn't happy with how the slicer I use did support structures, so I made my own support structure where I found it necessary. I printed this using ABS, and to avoid the corners warping upwards, I added thin layered squares to each corner. You will need to print two of these, to form the full foot / skirt. Just double the model up in your preferred slicer. I used a stanley knife to cutaway the support, and used a 4mm drill to even out the holes. I also used the stanley knife to round the edges of the round pillars, to make them slide into the holes more easily. I printed this on a Kossel Clear Delta printer, and sliced it with the accompanying outdated version of KISSlicer, with the following settings: Skin thickness: 1mm Layer thickness: 0,25mm Infill: 33,3% 1st layer print speed: 8mm/s Skirt enabled (to get the filament flowing before the actual model is printed).