20W G13 T8 Linear LED Bulb by Bulbrite at Lumens.com
T8 4FT LED Tube, 12W/15W/18W/20W & 3K/4K/5K/65K Selectable, Type A+B
LEDMyplace 20W 4ft T8 Dimmable LED Tube Light, 3000 Lumens, 4000K Frosted Natural White, Ballast Compatible Work with and Without Ballast, ETL and DLC Listed, for Factory, Workshop, Pack of 4 - Amazon.com
Great Value LED Tube, 10 Watts (20W Equivalent) T8/T12 Replacement Lamp G13 Base, Non-Dimmable, Soft White, 24-inches, 1-Pack - Walmart.com
4ft LED T8 Tube - Type B - 20W - 2600 Lumens - 6000K - XSY
4ft. LED T8 Linear Tube | Type A+B | Wattage Adjustable | 5000K