The Fluorescent Tube T5 14w 835 with a G5 cap. This lamp has a 24,000-30,000 hour life and is rated at 14w watt. The lamp produces a colour output of 3500K (Kelvin) - 835 - White. Your current product may have one of the following printed on it: GE; GE F14W/T5/835/LL Polylux, OSRAM; Osram FH14W/835HE - HE 14 W/835 , T5 LUMILUX HE, PHILIPS; Philips MASTER TL5 HE 14W/835, or SYLVANIA; Sylvania FHE 14W/835. The lamp is classified as a Linear Fluorescent product.