... 21W,28W & 35W b.High power factor available T4,T5 fluorescent lighting fixture CE/UL/CUL6W,8W,12W,14W,21W,28W & 35W High ... for 6W, 8W, 12W, 14W, 21W, 28W, 35W Installed with electronic ballast which provides instant start operation with no flickering & low ... -12W4452035HG108-16W4902035HG108-20W5352035HG108-22W7392035HG108-24W8752035HG108-26W10262035HG108-28W11752035 T4,T5 fluorescent lighting fixture