8Pack of 4Ft T5 28W LED Tube w 5000K White 5000 Lumen,2 PPF/W to Replace & retrofit 54W Fluorescent T5HO Lamps Directly Work w Previous Ballast. - - Amazon.com
Philips 28W Equivalent 46 in. High Efficiency Linear T5 Type A InstantFit Cool White LED Tube Light Bulb (4000K) 542423 - The Home Depot