AC vent booster

thingiverse

This thing lets you give a boost to airflow from a regular 18-inch wide forced air ventilation register. It uses a standard 120x120 mm muffin fan and attaches easily to the vent using magnets. The parts are made up of two pieces that get glued together right in the middle. The magnets are 1/2" diameter rare earth disc magnets. I've found the IPS Acrylic solvent Cement #16 to be excellent for welding all types of 3D printing filaments, including PLA, PETG and ABS. The fan is held in place using #4 screws. magnets: https://www.kjmagnetics.com/proddetail.asp?prod=D8H2 I only use these with air conditioning, so I remove them in the winter.