Went and picked up the cabinet today...My initial impression was this cabinet was never used, or used so lightly. The inside looks brand-new, there's no food residue anywhere! The only damage was on the latch side, there's a small dent (looks like from when they loaded it onto the pallet?). Doesn't affect function at all...and me not having the 220v set up yet, I won't know if it functions, I'm betting it does?
My only complaint is the protective plastic that's put on by the manufacturer is still on an so dry that peeling it off is going to be a whole day task (I shall persevere!).
So to describe how this oven/slowcooker works...heating elements are up top (it's all self contained, as it can be taken off the cabinet without much effort? There must be fans that circulate the air along the back. If you look in photos 3 and 4 below you can see a tuning plate, it has all the holes along it, which get more numerous towards the bottom (Which makes sense!?) I will drill a few holes in the back lower portion for the AMNPS(s) (I will use metal plugs as a way to block them in the event it's too much fresh air. The top heating unit has a vent built in, so most likely will not need add'l venting?