80 mm fan adaptor for Thetford C250&C260 toilet exhaust

thingiverse

Set of adaptors for the original thetford toilet cassette exhaust system. Originally the exhaust system is equipped with a 40 mm fan. This fan has not enough power in my opinion. That's why I designed a set of adaptors to make a 80 mm fan fit below the original place of the 40 mm fan. The connection on top is the same size as the original part. The middle part connects to 80 mm pipe on top and to a 80 mm fan at bottom. The bottom part connects to the 80 mm fan and to the 39mm hose which is originally used. The height I had to assemble this is at least 130 mm + length of the hose.