Well to start with, I got 3 portable a/c that we use versus the whole house a/c. With those units came several plastic pieces that fill the window space. Some were not needed so being the mechanic that I am I got a 4” a/c vent for a Thermoking APU and drilled a 4” hole thru the a/c piece and vented it directly out our window. I had extra weather sealing that came with the a/c that I used as well and now we have absolutely no fumes at all. I believe that these kits can be ordered as well less the Thermoking duct.**
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