20 Watts 4100K F20T12 G13 Base – UnitedBulbs.com
Best Light for Plant Growth | EZ GRO Garden
Sylvania A19 800 Lumens LED Bulbs 8.5 Watt 4100 Kelvin Pack Of 6 LED Bulbs - Office Depot
Feit Electric 40 W T9 16 In. L Fluorescent Bulb Cool White Circular 4100 K 1 Pk : Target
GE 6 Watt 9" Miniature Bi Pin T5 4100 K Cool White Fluorescent Light Bulb | eBay
Philips LED Philips Alto PL-C Energy Saver Compact Fluorescent Light Bulb: 1800-Lumen, 3500-Kelvin, 26-Watt, 4-Pin G24-3 Base, Cool White, 10-Pack - Walmart.com
Philips Circline Fluorescent T9 Light Bulb: 12-Inch, 4100-Kelvin, 32-Watt, Bi-Pin Base, Cool White - Walmart.com
GE 110-Watt EQ T12 Cool White Recessed Double Contact Fluorescent Light Bulb (2-Pack) in the Tube Light Bulbs department at Lowes.com
Warm white 2700K Soft white 3000K Neutral light 3500K Cool white 4100K Bright white 5000K Daylight white 6500K+ 6 Cat… | Different light bulbs, Light bulb, Daylight
Pack of 4) LED Direct Replacement F8T5/CW - T5 - 5 Watt - 12" - 500 Lumens - Super Long Life Light Bulbs - by KOR (Cool White (4100K)) - Amazon.com
LED Light Bulb, T8/T12 U-Bend, Cool White, 2100 Lumens, 15-Watts | True Value
GE Lighting FC12 T9 Garage & Basement Circline Fluorescent Light Bulb, Cool White Finish, 32-Watt, 1950 Lumen, 12-Inch Circular Diameter, 1-Pack - Compact Fluorescent Bulbs - Amazon.com
Sylvania A19 800 Lumens LED Bulbs 8.5 Watt 4100 Kelvin Pack Of 6 LED Bulbs - Office Depot
Feit Electric 40 W T12 48 In. L Fluorescent Bulb Cool White Linear 4100 K 10 Pk : Target
LED - Bi-Pin - 2 Watt - 200 Lumens - Cool White - 4100 Kelvin – lightingnbeyond.com
GE 6 Watt 9" Miniature Bi Pin T5 4100 K Cool White Fluorescent Light Bulb | eBay
HID - Metal Halide - 175 Watt - 14000 Lumens - Cool White - 4100 Kelvi – lightingnbeyond.com
Understanding Kelvin and LED Light Color Temperatures
Understanding Kelvin Colour Temperature - Pebble Grey
GE 59-Watt EQ T8 Cool White Single Pin (T8) Fluorescent Light Bulb (2-Pack) in the Tube Light Bulbs department at Lowes.com
What is Color Temperature? - Scott Lamp Company
Feit Electric 22 W T9 8.25 In. D Circline Fluorescent Bulb Cool White Circular 4100 K 1 Pk : Target
