I bought a similar dehumidifier… it helps a little bit, it does collect some water but when I turned my little turbo fan toward the vent in my tent, my tent sucked in and started pushing more air out… my humidity dropped from 90 to 70. I have very high humidity here and a lot of rain this summer, hope this helps. It’s my alternative to buying expensive dehumidifier 
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Did you get on Amazon or where?