140mm fan exhaust duct
thingiverse
I wanted to dump the heat my PC exhausts directly outside of my room, works with 140mm fan and 280mm radiators. Works with 100m diameter duct and 4in ducting too since they are roughly the same dimensions. Use m4 bolts and nuts to assemble together on the fan. Included is a blanking plate that uses fan screws to block of the gap on the nzxt h440 when you use 2 140mm fans on the top
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