Double ducted for fan 50mm. and hotend J-Head MK-V

This is a ducted of double way correct for fan 50mm. and hotend J-Head MK-V for printers Mendel Prusa version 2. The air is driven efficiently to the piece and directly to the heat sink of hotend J-Head MK-V keeping the nozzle hot. You will need bolts and nuts metric of 4mm. Two versions available, with and without mount plate and original 3D file for SketchUp too. You have that to remember this piece only fit over a X carriage, with three linear bearings LMM8U type like this http://www.iearobot