+++ This mount requires you to replace the M2.5x16 bolts that are standard for the hot end fan, with M2.5x20 bolts to reach the threads thru the duct arm and the fan. The stock bolts can then be used on the opposite side mounting arm.+++
This fan duct uses a 5015 radial fan and is directly mounted to the Slice Engineering Mosquito/Mosquito Magnum. It is designed to have the hotend fan mounted to the right side , but can just be mirrored to make it left side fan compatibile if you prefer. Ducting holes have a slight downward chamfer designed into them to ensure that the air is directed on your part, not the heater block.
Meaning you can use it on bowden or direct drive systems without any worry of the carriage design or mount system being in the way. Almost completely universal to fit any printer! No more searching high and low to find a duct for the mosquito!
I printed mine with resin on my Elegoo Mars but should work well using PETG/ABS/Nylon on fdm printers. Just be sure to set supports to bed only to prevent your slicer from wanting to create supports within the duct itself.
This duct was derived from the part cooling duct here:https://www.thingiverse.com/thing:3613113although almost no part of the original remains outside of the semicircular portion and fan attachment flange, after adjusting almost all the other aspects of it to fit my needs.