Philips Actinic BL TL TL-D 18W/10 1SL/25 Fluorescent Tube Black Light (9280 480 01003)Actinic BL TL-D 18W/10 1SL/25*** UPC 8711500263254 is for Carton with 25 pcs From PHILIPS ***With an optimized spectrum matching the eye sensitivity of the housefly, Actinic BL TL(-K)/TL-D(-K)/TL-E/PL-S and PLL lamps are perfect for attracting insects. They have virtually no UV-B output, and so are perfectly safe. What's more, with the lowest mercury content in the industry and being 100% lead-free, these lamps represent a very goodenvironmental choice. Furthermore, the availability of a wide range of form factors (straight (T5, T8, T12), circular(TL-E) and compact (PL-S/PL-L)) and wattages enables you to make all kinds of designs for your electronic fly killers.