The W2420 is designed for spot heating and is equipped with the patented Smart Limit Protection overheat safety system. With rounded die-formed corners, the grille has a seamless appearance that blends with any environment. This heater is frequently used as the primary heating system in small residential applications. The W2420 Wall Heater can be used with a built-in specifically TKIT-1 or TKIT-2 or wall-mount thermostat.