The original fan duct is too large and short to mount on standard X carriage on MendelMax 1.5 printer. This duct fit between the support of linear bearings of the X carriage This is the new version for E3D V6 of http://www.thingiverse.com/thing:290298 Thanks to: rrosinha (http://www.thingiverse.com/rrosinha/about) for the pleasant collaboration for the fitting test and the photos Mortadella DeMortadellis Design for the spectacular renders with my nickname on the heatedbedPrint this thing in ABS for prevent the melting of the duct. Set infill at 40% The mounting is similar to the original duct.