The file 'Vial Rack And Shelf – GC LC Vials 3D Printer Model' is (stl) file type, size is 164.9KB.
print the shelf on its "back" and you don't need supports.
I usually print 4 vial holders per round.
shelf_4x_vial_rack.stl | 62.8KB | |
vial_rack_5x5.stl | 588.9KB |