Flip Fan Cover to close the opening, if the fan stops blowing

Corrected on June 22nd 2019
The height of the blade is corrected. It was too long.
However it is still in development, I can prove (improve) it when i print it in Prague.
July 22nd, 2019
Improved with side fixing cylinders and holding blades outside.
Added Cover for Silent 200 fan.
On October 10th 2019 added cover for Dospel STYL 100 ventilator, but deleted on November 13th after failed print, will be replaced when proved, sorry.

DIY Flyingbear

Doesn't Matter

No

0.3

99%

The support of the inner cube has to be broken to be able to turn the blades

The fan cover has to be mounted vertical to allow to close the blades, when the fan stops to blow