DESC: Built for long-lasting performance, this oil-filled heater is made of heavy-gauge steel and has a durable, rust-free enamel finish. Each metal fin is machine welded to ensure leak-free operation. The oil in this portable electric heater never needs to be refilled or replaced. Featuring back-lit contorls, three heat settings and an adjustable thermostat for personal comfort, the heater has four easy-glide casters that make it easy to transport from room to room.