This quartz sleeve is developed specifically for Berson B410, B2020, and B1220 UV systems. With a length of 410 mm and a diameter of 33 mm, the sleeve protects the UV lamp effectively from water while transmitting the optimal amount of UV radiation for efficient disinfection. The quartz sleeve is made of high-transparency quartz glass, which ensures maximum UV transmission. To maintain optimal performance we recommend cleaning the quartz sleeve once a year and replacing it every 3-5 years, as described in our guide to cleaning quartz sleeves. Key benefits: Fitted to Berson B410, B2020, and B1220 UV systems. 410 mm long and 33 mm in diameter. Protects the UV lamp and secures optimal UV output. Long service life with correct maintenance. Please contact us if you are unsure whether this quartz sleeve suits your system.