i'm not too interested in bottom heat although i'm sure it is ideal as heat rises, and this heat is at the bottom.
i have enclosed shelves with fluorescent that i want to have a cheap heat source. i like the oil radiator heaters for their safety (not burning hot) and their efficiency, but they are way too big.
my enclosed area is 12 feet long by 2.5 feet wide. is there a small safe heater you recommend?