Pipe fitting adapter/joiner for the drain hoses of a washing machine and condenser-dryer. As printed it fits my Bosch models perfectly.
The model is parametric, so should be adjustable for other sizes.
It should be obvious, but it's worth stating: using PLA should be ok for temperatures around 40⁰C, however, it will soften significantly at temperatures 60⁰C and over. If you're washing with higher water temperatures, you will need to use a filament with better temperature resistance - even PETG adds about another 20⁰C.
The author hasn't provided the model origin yet.