case of 20) GE LED16BDT8/G4/840 LED tube 48" T8 type B 16 watt Cool white 4000K LED tube - Walmart.com
Feit Electric 12-Watt 21 in. T5 G5 Type A Plug and Play Linear LED Tube Light Bulb, Cool White 4000K (6-Pack) T521/840/LED/6 - The Home Depot
Feit Electric FC12/840/LED LED Bulb Linear T9 Lamp 32 W Equivalent G10Q Lamp Base Frosted Cool White Light: LED Linear U Shaped & Circuline Bulbs (017801907209-2)
Sylvania Luxline Plus T8 30W - 840 Cool White | 90cm| Any-lamp
5-Pack HE 21W/840 Osram 21W Lumilux Cool White T5 (34in) 849mm Fluorescent lamp | eBay
Philips 18W 24in T8 Cool White EUROPEAN Fluorescent Tube | MASTER TL-D Super 80 18W/840 | Bulbs.com