120mm fan adapter to pvc or heater vent hose

thingiverse

flip to print without supports made this for https://www.theplayalabs.com/swamp-cooler instead of buying an adapter v3 has slightly larger screw holes because it's hard to line everything up with the bucket lid being arced idea for v4, have holes in the tube portion for putting tensioning bolts through (from inside or outside) walls on the round part are a bit thick to allow for adapting a blower to the pvc as well. pvc swamp cooler is experimental design i'll get to publishing some time, loosely based off designs here www.youtube [.] com/watch?v=R_g4nT4a28U (link broken so it doesn't show up in preview added a longer print version, i put this on under the lid, below the fan, to pull air from lower down, no idea if it helped, i used it primarily in a 2x5gal setup, with bottom bucket as reservoir and top bucket as all holes to pull air through (like this one https://www.youtube.com/watch?v=UNxvjVUFH7k ) FLIR photo is of the 2x 5gal version, at burning man, I had the exhaust fan blowing into a kodiac and another pump in the reservoir bucket that pumped cold water into the van, through a motorcycle radiator with a fan on it (as evidence by photo, the pump for van didn't have enough head rating or the hoses were to long?)