I created my exaust port.
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You’re more prepared than most of us were 
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Now that’s being proactive!
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one thing i’d suggest, especially if you’re just going to leave it in the window, is to seal around the four sides and around the base of the hose on the window side with some aluminum HVAC tape, or something similarly impervious to the fumes. that foam will allow some to come back into the room because you won’t have a tight seal around the window.
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Ditto this! I got the PRU only two days after the final tapping…I wasn’t expecting them to ship it 2nd day and I wasn’t ready. 
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I plan to remove it from the window when not in use.
On something that rolls away hopefully.
This puppy is heavy and not all that rigid, which is why they pack it like they do I suppose.
Just sitting here and thinking about moving it around the room has my head shaking nope.
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A double hung window also has a seal at the top of the lower half that is easy to overlook.
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