metal or plastic box black, grey, or white a fan or blower to circulate air a vent or grille to output air a thermostat to control temperature a control panel with buttons or knobs a power cord or plug
convector which has metal or plastic box convector which has black, grey, or white convector which is a fan or blower to circulate air convector which is a vent or grille to output air convector which is a thermostat to control temperature convector which is a control panel with buttons or knobs convector which is a power cord or plug