A warm air furnace not listed for closet or alcove installation is to be installed in a confined space. The furnace measures 2` x 3` x 5` in height. The volume of the confined space shall be a minimum of ___ cubit feet.

A warm air furnace not listed for closet or alcove installation is to be installed in a confined space. The furnace measures 2` x 3` x 5` in height. The volume of the confined space shall be a minimum of ___ cubit feet.