The new Wacker Neuson portable Cub 300 indirect-fired heater provides up to 80-percent net heater efficiency. The Cub 300 has a maximum heat input of 302,000 Btu per hour at an airflow rate of 3,690 cubic feet per minute. The unit runs on kerosene or No. 1/No. 2 diesel fuel. The Cub 300 offers lower operating costs by producing more heat per gallon of fuel consumed, resulting in dramatic fuel savings. All models of the Cub 300 feature a 100-percent stainless-steel firebox and heat exchanger for long-lasting durability and robust performance.