I bought the version without the 8 feet of ducting for $48 instead. Came super fast, bought 9/15 arrived 9/17 which is faster than Amazon for me.
Everything seems to work fine for my needs. I am not using them for grow tents but instead experimenting on removing TVOCs from the air. So far it works great and is way quieter than I was expecting. If anyone has any questions I’ll see what I can answer.