Feit Electric T4 GY8.6 LED Light Bulb Warm White 20 Watt Equivalence 1 pk - Ace Hardware
EEVblog #728 - T4 LED Lighting - YouTube
ADJ 's LED Pixel Color Tube 360 for Bright LED Displays
5W 110V E14 Mini LED Bulb, 50W Equivalent, T3/T4 European Base Replacement Omni-Directional E14 Bulb for Ceiling Fan, Chandelier, Fridge, Indoor Decorative Lighting(Pack of 5, Warm White) - - Amazon.com
Vibrant T4 Led Fluorescent Tube, Colored and White - Alibaba.com
E12 LED Bulb T4/T3 500lm Candelabra Base - Modern - Led Bulbs - by Luxrite | Houzz
T4 SlimLites and Replacement Bulbs [Closeout Stock] | Eclectic-ware