Whether there are air return holes in the kitchen drain

Updated on Kitchen 2024-03-21
3 answers
  1. Anonymous users2024-01-23

    The sewer must have a drainage hole, otherwise the drainage will be suffocated and the drainage will not be smooth.

    Of course, the exhaust hole can be set in multiple places, such as kitchen, bathroom, washbasin, washing room, ......The sewer and exhaust can be used in series.

  2. Anonymous users2024-01-22

    It is best to seal it, there is no need to keep the "return air hole", which will cause an unpleasant smell.

  3. Anonymous users2024-01-21

    Yes, all the way to the top.

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