Preventative Maintenance on Cook Exhaust Fans

Title says it all.
I am not making any money off of this video.
This is a random roof somewhere in the United States. Probably Illinois.
Comment what you do for EF PM's below!
Like and subscribe if you had one chuckle.

[@Brainhead0]

"OH MY GOSH CHEM TRAILS" … now everyone in the office wondering why I laughed so hard seemingly out of nowhere. Awkward.

[@tommytommyfieser]

Lololol :D