Bulbrite 21W - T5 - Mini Bi-Pin Base - 6500K - 24,000Hrs - Daylight White Light Color - Linear Fluorescent Light Bulbs (Pack of 20 Bulbs) - - Amazon.com
3 ft LED 12 Watt T5 Bulb - Plug&Play - 21W Replacement - 1,550lm - 4 P – ONBULBLED
New 2021 ETL 21W/41W Tube Grow Light T5 LED Grow Light Tube Bloom LED T5 Ho Fluorescent 54W T5 LED Tube Replace 54W - China Grow Light T5 LED Light Tube 6500K
Fluorescent F21 T5 21W 6400K | Lunares Store
Sylvania FP21/841/ECO 21 Watt 34 Inch T5 Linear Fluorescent
GOCuces T5 LED Tube Lights 13W Replace to F21T5 G5 Base 21W Fluorescent Bulb | eBay
Feit Electric 12-Watt 21 in. T5 G5 Type A Plug and Play Linear LED Tube Light Bulb, Bright White 3000K T521/830/LED - The Home Depot
3 ft LED 12 Watt T5 Bulb - Plug&Play - 21W Replacement - 1,550lm - 4 P – ONBULBLED
PHILIPS 21W 34in T5 Warm White Fluorescent Tube - Amazon.com
T5 LED 21W Bloom - SANJIN Lighting
LED T5 Tube Light, 4 ft. "HO" High Output, Only 21W - LEDtronics | 2760