After I've been running such a fan (24V) for more than a year, I've bought a second one. Both work very well and top reliable unlike the four more badly running Nicro Solar Night & Day
Helpful?
by PHILIPPE A.
1/3/2022
Verified purchase
Variant:
13628
The name "insert" is misleading, the device can not be installed in existing Vetus fans, it has to be screwed against the ceiling and then stands, according to the height, approx. 6 cm. Pretty ugly. Almost noiseless is the part also not, but it has a switch, with which one can also switch the speed steps 1 and 2. Conclusion: Usable, but no use (which disappears invisibly in the ceiling) but an essay.