The file 'N Scale Pipe Loads 3D Printer Model' is (stl) file type, size is 663.04 KB.
N-Scale 12" diameter hollow pipe load. Actual print size is 17.2mm x 17.2mm x 96mm, which scales out to 9'H x 9'W x 50'L.
The hollow, thin-walled pipes were designed for a 0.25mm nozzle and 0.15mm layer heights.