This Millivolt (MV) model features a Continuous Pilot system where the pilot flame stays lit at all times. This model is a great choice for anyone who desires a simple heat source that does not require power for installation and operation. Lopi’s Radiant Plus Medium Gas Fireplace Insert is an ideal choice for anyone seeking reliable performance and excellent features at a great price! The Radiant Plus provides beauty and warmth to living spaces up to 1,250 square feet. The Dancing-Fyre burning and Classic Log Set mimic a real wood-burning fire, right down to the flame pattern and highly detailed logs and ember bed. The Radiant Plus is offered with both Standing Pilot (MV) and GreenSmart Basic (IPI) control systems, allowing you to choose the version that best suits your lifestyle and heating preferences! The Standing Pilot model is ideal for anyone wanting a simple, dependable heat source that does not require power to operate. The GreenSmart Basic system is a great choice for convenience and energy efficiency, as your pilot turns on and off depending on your heating needs. It also includes an automatic battery backup system to operate during power outages. A variety of face styles and the ability to custom fit panels to each unique fireplace give this insert unlimited design potential. Click “Design Your Fire” to customize your Radiant Plus Medium.