Philips TUV F17 T8 Germicidal Fluorescent Light Bulb (9279 419 04020) Philips TUV F17 T8 Germicidal Fluorescent Light Bulbt (9279 419 04020)TUV T8 F17 1SL/25*** UPC 8711500264138 is for 1 pc From PHILIPS ****** UPC 8711500264145 is for Carton with 25 pcs From PHILIPS ***TUV T8 lamps are double-ended UVC (germicidal) lamps used in professional water and air disinfection units. TUV T8 lamps offer almost constant UV output over their complete lifetime, for maximum security of disinfection and high system efficacy. Moreover, they have a long and reliable lifetime, which allows maintenance to be planned for in advance. Please Note: -Buyer pays PayPal. -Free domestic shipping is by USPS First Class Mail. -All orders placed by 3:00PM EST, ship same day Monday-Friday. -USPS tracking email will follow the evening of shipment. -International buyers, USPS First Class International can take up to 45 days to arrive. Faster options are available during checkout. -Import duties, taxes, and charges are not included in the item price or shipping cost. These charges are the buyer's responsibility. -Please check with your country's customs office to determine what these additional costs will be prior to bidding or buying.