aluminum tape { air conditioner type tape }
worked good for me,,,, i sealed with duct-tape,,, then came behind that with the aluminum tape,, for sealage and '' grip''
..but i had a '' perferated board'' { it was free} but had slots for the heat and humidity to literally escape,,,
so on both sides i had to seal from top to bottom,,,i clear siliconed,,, what i could, and went over it all inside and out with duct tape, followed by the other tape...
and pitch black night,,,, just a little light shines thru duct-tape,{ very little } a pass with the alum would fix it,, but it's nothing,,,
if you had acess to another refrigirator, i'd tell you to '' REMOVE THE SEALING OFF IT AND GLUE IT TO YOUR KILN, so you'd have that magnatized '' sealing'' affect,
...
keep a journal of how ,and what,,and for what reason,,, < when you do the wiring,,,
i'd like to put a hot water heater thermostat on mine,,,, but im no electrician,,, and know nothing of them matters,
so a guide of what you do is appreciated,