... wider environment of temperature ,it could keep high output .we could do 42watt to 471 watt.2.long lifetime , ... & ozone free typeShape: Straight,U-shape,pen-shape,various special shapes.Model: GPHA357T5L,GPHA843T5L,GPHA1000T5L,GPHA1554T5L,GPHA843T6L,GPHA1554T6L.Diameter(mm ... ,115,320,500,460,600,1160.....Life(h): ≥13000Note: We can make suitable types of Amalgam UV Germicidal Lamp according to customers ...