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Portable Air conditioner Window Vent Seal Kit with Universal Coupler Fit for 5.1"/5.9" Exhaust Hose, Mobile A/C Unit Window Vent Kit with 4 Vent Seal Plates for Vertical/Horizontal Sliding Window

Portable Air conditioner Window Vent Seal Kit with Universal Coupler Fit for 5.1"/5.9" Exhaust Hose, Mobile A/C Unit Window Vent Kit with 4 Vent Seal Plates for Vertical/Horizontal Sliding Window
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comments:

Still-Tomatillo posted on r/askportland2w

I got this from Amazon and honestly it worked great. I had to tape around the hose a bit to keep it in but it was a pretty cheap fix