Bathroom Exhaust Fan Impellor

This is just another 10 blade impellor for an exhaust fan commonly found in bathrooms. I had to replace mine, but nothing matched the motor shaft I bought so I had to adapt and create something. I can't tell what the original brand was, but a Nutone replacement did not fit the bill. 

I'll be glad if this model helps someone else. I don't have the original motor brand and name, but it was a popular brand over 20 years ago. The fan impellor that come with the motor I bought was too big for the enclosure. I recommend an engineering grade material like polycarbonate, which is what I settled on. It should be something relatively flame retardant. Avoid PLA. It would only make things worse in case of a fire may not do well if the motor were to overheat. The model marked as “final” is he design I went with, however the other can work depending on your motor's rotation, recessed can depth, and where the fan exhaust hole is located. The taller model for me, was installed with the blades up. The final model, working as intended, was installed blades down.