This is my dust collector/ sanding station with the florescent light grill on top. doc,Im glad you started this because I needed to change my filters.
The front panel comes off of 4 threaded posts with wing nuts.
this motor I got from Grainger. It is basically a squirrel cage blower wired to a basic light switch on side.
this shows the 2 filter slots. 2 stage,coarse and fine . Basic 20"x20" furnace filters
Its pretty quiet. No louder than a window box fan on med...Oh yeah, it blows air towards the floor.