Thank you both for that answer. I kinda assumed you need to close it but frankly, I've assumed things before that were completely wrong.
I see a potential side benefit with this smoker, I can open the drain to allow air flow to help burn my pellet tray for cold smoking and place the cheeses on the regular racks inside
Make no mistake, there ain't no powder in this Puff ! And... I'm not really a crazy person but I play one in real life
Good luck Puff! Keep us posted! Good or bad - we've all been there….
And on the eighth day God created barbecue …. because he DOES love us and he wants us to be happy.
Current smokers: Egor (trailered RF) and Easybake (tabletop pellet drive)