A furnace is being installed in a garage to heat an attic apartment. Concrete filled steel posts will be installed in front of the furnace so no vehicle will actually be able to hit the furnace. How high above the garage floor do the burners have to be to comply with the minimum height specified by the code?

A furnace is being installed in a garage to heat an attic apartment. Concrete filled steel posts will be installed in front of the furnace so no vehicle will actually be able to hit the furnace. How high above the garage floor do the burners have to be to comply with the minimum height specified by the code?