This UV lamp is a direct replacement for the Berson B2000 UV system. Rated for effective disinfection of microorganisms in water, the lamp measures 14 mm in diameter and 770 mm in overall length, giving a precise fit within B2000 reactors. Rated service life is 8000 operating hours. Please get in touch if you are unsure whether this lamp fits your system. Compatible with B2000. Product group: UV Lamps. Sales unit: pcs.