“Looking for a sleeve for window LW1215ER window condition What can I use as a sleeve for my window air conditioner ( LG LW1215ER 12,000 BTU ) to be installed in the wall, since you don't make one for this size air conditioner, can not find one any where.”
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The reason you are unable to find a Wall Sleeve for the LG Window Air Conditioner, Model # LW1215ER is because it is not designed to be used as a Through-the-Wall unit. As a window air conditioner, it requires a standard single-hung or double-hung window for proper installation. The outside of the cabinet must extend outward for at least 12" and there should be no obstacles, such as a fence or wall within 20" from the back of the cabinet because it will prevent heat radiation from the condenser. That and any restriction to outside air will greatly reduce the unit's cooling efficiency or may even cause it to burn itself out. All side louvers of the cabinet must remain exposed to the outside of the structure. Non-window installations, including using a wall sleeve, holes in walls or other types of installation are strongly discouraged...^IFV
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