A room where an appliance is to be installed is 12` x 6` with an 8` ceiling. The combustion air for the appliance will be taken from the room. 50 cubic feet of ventilation air are required per 1000 BTUH. What maximum BTUH input rating is allowed for the appliance?

A room where an appliance is to be installed is 12` x 6` with an 8` ceiling. The combustion air for the appliance will be taken from the room. 50 cubic feet of ventilation air are required per 1000 BTUH. What maximum BTUH input rating is allowed for the appliance?