I've finally updated the ventilation system to something more permanent. Now, it stays in the window full-time, but could be removed it necessary. I purchased all of the duct pieces at Lowe's and the fan itself from Harbor Fright using a 20% off coupon. The fan airflow is 1380 cfm on low and 1590 cfm on high. The noise isn't too bad either. I just play my music louder.
The end of the duct still drapes over the top of my work bench.
6D78F59B-77DF-4DB7-9868-BF530E9643ED by
Ruth Pletz, on Flickr