Osram SubstiTUBE Eco T8 LED tube 20 W 3000 K 1500 mm is a glass LED tube designed for operation with electromagnetic control gear. It provides warm white light and is ideal for general illumination in commercial and industrial environments. The glass construction prevents bending and supports quick, safe replacement without rewiring. Suitable for use in corridors, stairways, parking garages, supermarkets, warehouses, stations, and hospitality spaces, this mercury-free LED tube delivers consistent color quality and reliable performance even at low temperatures.