Quartz sleeve designed for Aquacare 40 W UV lamps. Length 813 mm, diameter 25 mm. Isolates the UV lamp from direct water contact while transmitting UV energy for effective disinfection. Manufactured from high-quality quartz glass that withstands pressure and temperature variation. Aquacare recommends annual cleaning and replacement every 3-5 years to maintain performance. Contact us if you are unsure whether this quartz sleeve fits your system.