Barney Stringer on Twitter: "Bulb makers are trolling me. If 3,000 Kelvin is “warm” how is 4,000 Kelvin “cool”? Surely you mean “white hot”? https://t.co/6UnofPAYwE" / Twitter
LED Color Temperature in Kelvin: All You Need to Know About It - LampHQ
Beauty White 4000 Kelvin LED Retrofit Kit for 2x4 Foot Fluorescent Troffer
What is Kelvin and why do I care about the K number in lighting
Amazon.com: Philips LED Dimmable A50 Modern Light Bulb: 250-Lumens, 4000- Kelvin, 7.5-Watt (25-Watt Equivalent), Cool White, E26 Medium Scew Base, 538966 : Everything Else
Satco 500 Lumen; 7 Watt; 4000 Kelvin; Dimmable; 12 Volt LED MR16 Spot Light Bulb | eBay
ESL ESL-AL-200W-240-HV-BKRDM4-T4 Nova Area Light Series 200 Watts 28 881 Lumens 4000 Kelvin 277-480 VAC Input Black Finish Round 4 Direct Mount Type 4 Lens | Gordon Electric Supply, Inc.
SATCO-S8482 10 Watts A19 LED Frosted 4000 Kelvin 120 voltage GU24 base Bulb 45923084829 | eBay