Ultraviolet Light Tubes, 10W, Replacement UV Light Bulb for PestiTech PTH-8 Insect Killer 20W, Pack of 2 Replacement UV light tube for PestiTech PTH-8 Sold in a pack of 2pc 10W T8 UV light tube SuperLife: 5,000hours UV emission: 365nm Money back guaranteed, if not satisfied!