Photos of my Proofer / Kiln.
Photo 1, oblique view of the exterior of my 1970's era "Proofer Cabinet." It is all aluminum, and the over all exterior dimensions are 31"x 21"x 70".
Photo 2, cabinet with the door open showing interior. Corrugations on the sides are made to hold a full sheet 18" x 24" bread pan.
Photo 3, showing column on back wall of interior. Column is mated to the modular heat / humidity unit and is intended to distribute warm air evenly throughout the cabinet. There are a series of openings that correspond with the corrugations in order that each pan is getting exposed to the warm air.
Photo 4, shows cabinet with one bread pan installed. Cabinet can hold a whole bunch of pans. I'm not sure how many.
Photo 5, I always keep one pan at the bottom to catch any falling debris so that said debis doesn't get into the heater / air circulation unit & "gum up the works." You can see leftover toasty tobacco bits from last year. Bottom red colored panel is actually a modular unit that fills the full depth of the cabinet, and contains all the working parts. You can remove the unit easily and perform repairs when necessary. I have spare parts, just in case it dies on me mid-kiln.
All in all a pretty slick unit. It is big enough that you can kiln quite a bit of tobacco at one time. And you can control temperature with a thermostat to a fair degree of accuracy. I run the thermostat at about 7 out of a possible 10. That setting will maintain a temp of 125 - 130 degrees. I'm not sure how hot it will get if you maxed it out, I've never tried.
As is the case with everything in life, this machine has its limitations. It isn't as well sealed as I would like it to be. As a consequence, you have to refill the water supply regularly. And it also uses a lot of electricity.
I originally bought it used, and would run it without the water to dry Chili Peppers. A giant food dehydrator of sorts. I could dry 50 - 60#'s of Chilis in 24 hours or less. (I was doing this commercially at the time.)
Best thing of all, it's paid for and doesn't owe me a dime!
Wes H.