The Osram Powerstar HQI-T gas discharge lamps are available in very large wattages that run up to 2000W. This makes the HQI-T light bulb extremely suitable as lighting for, for example, factories and airports. The light bulbs cannot be dimmed but are particularly efficient. In addition, gas discharge lamps from the Powerstar HQI-T series are equipped with an E40 base. This screw system makes installation of this gas discharge lamp very easy. In addition, HQI-T gas discharge lamps from Osram are available with a G12 base. This capsule bulb is relatively compact and must be placed in enclosed fixtures.