You want the storage cabinet to be flammable?
NO!
It needs to be inflammable or nonflammable.
Well ...
Greetings
I know SAMMI calls for a 1" thick wooden box for storage of powder quantities between 20 and 50 lbs,
and I know that many folks recommend a non latching type refrigerator for that purpose.
You can't have it both ways.
A wooden box IS flammable.
Refrigerator ?? - 'Vented' ?