Carefully packaged.
A bit difficult to install if you already had another ventilator and want to screw it into the same holes.
Also, the way you bring the connections to the joint is a bit tricky compared to other ventilators.
Silent compared to others even though it said it has more dB than my previous one.
It has flaps to prevent cold air from coming in from outside.
I, who wanted to install it on the ceiling, removed them completely.
Over time, its durability will show, but as a first use, I am very satisfied with its performance