Question to people who understand plumbing, what are these holes on the sides?


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Question to people who understand plumbing, what are these holes on the sides?
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Question to people who understand plumbing, what are these holes on the sides? - My, Bathroom, Longpost, Hidden camera, Plumbing
Question to people who understand plumbing, what are these holes on the sides? - My, Bathroom, Longpost, Hidden camera, Plumbing

Bathroom Plumbing Hidden camera
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