46315 is a Biax™ T/E LongLast™ 4-Pin CFL Lamp, with amalgam, external starter required, dimmable, suitable for outdoor luminaire, enclosed luminaire, post lighting, downlighting, table lamp, residential, office, hotel, motel, restaurant, corridor lighting, wall sconce, industrial and retail application. Ultra compact energy saving CFL lamp with triple-tube design give an ideal light source for small fixture and downlight. Biax™ T/E lamp allow more compact fixture designs with the same lumen output as Biax™ D lamp. It can also be used to deliver higher lumen output from existing design. The amalgam technology makes the Biax™ T/E suitable for use in any burning position with same light output. It can be used in enclosed luminaire and outdoor application too without significant light loss. Same light output in any burning position. Up to 80% energy saving. Built-in end-of-life protection.