Single Nozzle Version found here: https://www.youmagine.com/designs/um2-dual-fan-shroudDisscussion about the fan shroud is found here:http://umforum.ultimaker.com/index.php?/topic/10554-um2-fan-shroud-replacement/?p=102188Please place comments in the discussionWill require good insulation from the heater block and not recommended for high temp prints as it could deform. Working on a metal design.Spacers are required to stop the hot end securing screws from hitting the shroud.Make sure your temps arnt to high so overhangs are clean and the fit is correct. Can be printed with no infill.