Specifications: Tubular double-ended UV germicidal lamps Features: Hot cathode, pre-heat start; Average life time:8,000hrs; All kinds of sockets and fittings can be available;ceramic base. Applications: Hospitals, schools, hotels, residences, offices etc. Disinfect the air and surface of goods. All kinds of home electric equipment is available. Diameter dimension(mm):12;19;25(or special type) Watt(v):4;6;8;10;15;20;30;40(or special type) Tube length(mm):121-1200(or special tube) Tube current(ma):160-330 UV intensity:16-130 All ceramic base