re: My shop

What a great place to work! Nicely organized while still looking like a place that actually produces projects. 
 
Is the exterior metal? I really like the look.

What are the numbers for on the dust collection? My guess is order of operation when emptying?

What is your favorite feature? Any things you would change?  I'm looking at a reorganization and expansion of my space. I like things in drawers, but also like things easily accessible. You have both featured throughout. Anyway, any insights/thoughts are appreciated