Blacklight ultraviolet UV T8 U-shape tube light bulb with 25mm diameter tight bend U-tube for use in fly killers. The energy distribution of the BL368 lamp is a narrow band of light concentrated around the spectral peak at 368nm. This is widely accepted as the most important frequency for the attraction of flying insects. The radiation at 368nm is twice as powerful as from BL350 tubes, and because of this, the lamp attracts more insects.This U-tube 4 pin Fly killer bulb with a G10q cap type is suitable for all compatible fly killer units. Using only 25W of your electricity this long-life bulb has an average rated life of 10,000 hours. With a 360 beam angle this Blacklight bulb emits a mixture of ultraviolet and visible light that will appear to glow a luminous blue colour when in operation and attract flies and many other insects.This T8 U-Shape Tube is a newer product from Wemlite and supersedes their old T8 U-Shape Tube part codes: FUL25T8.Need more help in choosing a suitable ultrav