This quartz sleeve is designed for the Berson Inline 40+ UV system. It protects the UV lamp against water and dirt while ensuring optimal UV penetration. With a diameter of 33 mm and a length of 220 mm, it is sized accurately for the system. Maintenance tip: Clean the quartz sleeve annually and replace every 3-5 years. Read more in our guide to cleaning quartz sleeves. Key benefits: Fits Berson Inline 40+. Length: 220 mm, Diameter: 33 mm. High UV transmission. Hard-wearing quartz glass with a long service life. Please contact us if you are unsure whether this quartz sleeve fits your UV system.