LED PL G24 4 pin 9W (Eq to 18W CFL) 110-277VAC Lamp UL Approved Latest Generation LED PL G24 4pin Lamp Samsung LED x 28, Neutral White 4500K, CRI &gt; 83, Non-Dimmable Equivalent to 18W CFL, Compatible with 90% of Inductive or electronic ballasts - NOTE, try one fixture first, if flickers, remove ballast. Luminous flux: 920LM, 270 Degrees No UV or IR radiation, low heat