Maybe we are not the cheapest with our circulation system, but this is really sch.. !
As you know has fosfine a low explosion level if you see the wiring of this pomp you could wait until the whole ship explode.
Our pump has a weight of 15 kg this toilet ventilator not even one kg.
A Circulation and/ or J-System should be with tube perforated with a diameter 20 cm.
Normally you put the pipe from front until the back side.
See for your self its cheap,
I hope that someone is good insured.
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