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Hello! The purpose of setting off the line in advance is to better control the position of the air outlet.
It is necessary to leave a maintenance port in the direction of the air conditioner wiring, because no matter how good the equipment is, there are times when it fails.
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You should have tried it all when you handed over the house, and there should be electricity on the top light. Then when the ceiling is connected, bath bombs, fans and the like will be tested. >>>More
Of course, if you have a dark wire, you must pre-bury it before pasting the wall tiles, and leave the wire in the position of the bath bomb. After the ceiling is installed, you can wire the bath bomb.
Generally, it is not left, because there are vents that will enter dust and foreign matter, but leaving vents can reduce the temperature of the ceiling and the indoor temperature.
Generally, it is not left, because there are vents that will enter dust and foreign objects, and leaving vents can reduce the temperature of the ceiling and the indoor temperature.