DeLonghi's Safe Heat Oil-Filled Radiator is the perfect solution for a portable heater when you don't have a lot of floor room, It stands upright and has a small footprint so it can be used most anywhere. This wonderful Radiator has vertical Thermal Tunnels that are engineered to maximize radiant heat flow while maintaining a low surface temperature. This Radiator is permanently sealed with pure diathermic oil for stable and efficient heating and the best part is, it never has to be re-filled!!