Osram Vialox NAVāT 1000 W E40 is a singleāended highāpressure sodium lamp for open or enclosed luminaires. It draws 1000 W and runs on 230 V with an E40 base. The lamp outputs a warm 2000 K spectrum favored for flowering, and is 358 mm long by 66 mm in diameter with a product weight of about 315 g. Typical horticulture retailers rate its luminous flux around 130,000 lm and recommend it for flowering areas of roughly 1.2–1.5 m², depending on reflector design, mounting height and environmental control. Service life is quoted up to 20,000 hours, with a maintenance cycle of about three years at approximately 11 h/day of operation.
