Osram SubstiTUBE LED tubes are 1-on-1 replacers for fluorescent tubes. Fluorescent tubes are light sources that use mercury and a lot of energy. That's why switching to LED tubes is beneficial in several ways. It's better for nature because it is recyclable, doesn't use mercury and uses less energy. And it's better for your wallet, because of the lower energy costs and longer lifetime that results in lower maintenance costs. Use the filters on the left to choose the right length, color, and product type and replace your fluorescent tube for an Osram SubstiTube.