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It is an exhaust fan, most of which are driven by the convection of air.
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It should be the louver tuyere of the range hood.
Look at your picture above: it doesn't matter, as long as you can press the toilet, if the country needs to press the elbow, the pipe must be at a certain distance from the wall, so that the pipe wrench can go down.
The water is not pressurized, and the waterproof pipe joints can be glued for a long time. >>>More
It should be installed in the center of the bathroom. >>>More
First, you can see if there is an anti-odor floor drain installed in the bathroom. >>>More
If there is a long-term power supply in the bath bomb line, it is possible to see where the power supply of the bath bomb comes from, if the power supply of the bath bomb itself is connected from the socket line, then the position of the bath bomb is all control lines, and the power supply can not be connected from here, and the --- can only be known after the connection line is detected