Last week anyways . I swapped out the Lithonia Pre-heat twin F8T5 fixture in my kitchen  ( https://www.lighting-gallery.net/gallery/displayimage.php?album=5198&pos=217&pid=169890 ) for a no name F14T5 instant start fixture I got from ReStore for $3 .  The Lithonia kept eating the same lamp and I got tired of replacing it . The new fixture came with a Keystone 841 T5 tube and a ElCheapo Keystone electronic ballast ( the one that is just a circuit board mounted on a plate with a piece of plastic around it so someone can't electrocute themselves . The new fixture uses less wattage and is brighter .