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You may want to make a trip to the big box store and purchase a piece of high density foam insulation board. You should be able to find materials that are colored pink or blue that comes in 1" or 2" thicknesses. Carefully cut pieces that will fit between the window bottom, side wall and the inward protruding part of the AC unit. If cut correctly you should ...


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The key will be to a) block all air paths, and b) have rigid barriers rather than flexible barriers. So, those pleated plastic barriers must be supplemented, if not replaced. Ideally, you should remove the AC unit (don't drop it out the window!), remove the plastic barriers and frames, and then reinstall the AC unit with 1/2" or thicker plywood on either ...


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I wouldn't completely rule out sounds getting through the floor, and the walls via the air. But the door is certainly significant,and you're in the right track with sealing it. Is it solid wood or hollow? If the latter, filling it with foam filler might help, though the cardboard honeycomb in such doors may make it difficult or impossible. There are self ...



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