ESPEN Technology L48T8/840/12G-EB RetroFlex Series DLC Listed 48-Inch 12-Watt T8 LED Ballast Compatible Linear Tube Lamp 4000K Dimmable
90 Min. Emergency Battery Backup LED T10 Tube - RAB T10EM-17-48P-840-SE-BYP | CityLightsUSA.com
GE 20804 F70T8/840 - 4000K - T8 Fluorescent | CityLightsUSA.com
LED14T8/U/840 - LED Type C U-Tube | Current - GLI Brands
10 x 2ft F18w (18w) T8 Fluorescent Tube 840 Cool White [4000k] (SLI 0001476) - - Amazon.com
Keystone KT-LED7T8-24GC-840-D - Linear T8 LED Tube
Philips CorePro LED tube 840, p/10 - Stable equipment
Keystone KT-LED15T8-48GC-840-S | Smart Drive T8 LED Tube - 4000K
Feit Electric 40-Watt 8 ft. T12 FA8 Single Pin Type A Plug and Play Linear LED Tube Light Bulb, Cool White 4000K (2-Pack) T1296/840/A/LEDG2/2 - The Home Depot
L48T8-840-12P-G4-DW 12 Watt 4 Foot LED Linear Tube Lamp Direct Wire Double End Power