GE Replacement LED 15-Watt EQ T8 Daylight Medium Bi-pin (G13) LED Light Bulb in the Tube Light Bulbs department at Lowes.com
4ft. LED T8 Linear Tube | Type A+B | Wattage Adjustable | 5000K
Case of 25 - 4ft LED T8 Glass Tube - 15W - 2200 Lumens - 4000K & 5000K - LumeGen
KT-LED15T8-48GC-830-D T8 LED Lamp | 15W 3000K 4-ft Tube
RAB T8-15-48G-8CCT-HYB 4ft T8 LED Linear Tube, 15W, Selectable CCT 3000K-6500K, 80 CRI, G13 Base | Cooper Electric
15W 2 Ft. LED T8 Aluminum Tube Light 5000K Frosted Lens 2100 Lumens Plug & Play or Line Wiring (Hybrid) | LEDRadiant
Fulight Rotatable LED F15T8 Tube Light-18-Inch (17-3/4 Inches Actual Length) 1.5FT 7W (15W Equivalent), Warm White 3000K, Double-End Powered, Frosted Cover, 85-265VAC - Amazon.com
T8 LED Light Fixture 2ft 1680lm 15W Under Cabinet Lighting, 6500k Cool White, Workbench and Utility Shop Lights, Corded Electric with Built-in ON/Off Switch (Pack of 2) - Amazon.com
4ft. LED T8 Linear Tube | Type A+B | Wattage Adjustable | 5000K