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The model allows 3 options for venting, download the installation guide, I believe it is page 12 and 13, and it advises 3 possible Ventilation types (choose A, B or C): - A. Outside top exhaust (vertical duct) - B. Recirculating (non-vented ductless) - C. Outside back exhaust (horizontal duct) https://downloadcenter.samsung.com/content/EM/202107/20210727164142515/Install_ME11A7510DS_AA_DE68_04709A_00_EN_MES_210616.pdf
Sorry, there was a problem. Please try again later.It can be vented from top or back. I don’t know about the decibels
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