The First Light part # GIA1554T6LCA320-F is an Amalgam Lamp. They are used in disinfection of municipal wastewater, industrial process of water and primary drinking water, as well as in the disinfection of air and HVAC systems. Additional applications include food and beverage processing, as well as ink curing applications, wherever killing of airborne germs in needed. This item has a maximum power output of 320W, and 145V, with lamp current of 2.2 Amps. It??s Base Face ?? Base to Base is 1554mm, Arc Length of 1483mm, 19mm in diameter, and rated life is 12,000 hours.