You can get 4' LED conversion kits at Home Depot or ordered directly from manufacturer. For kitchens, I usually use daylight color temps but they are also available in warm white and some are also dimmable from a wall dimmer. Super easy to do. Contact me if you need help. https://www.homedepot.com/p/toggled-48-in-16-Watt-Daylight-Deluxe-T8-Dimmable-Linear-LED-Tube-Light-Bulb-2-Pack-D416-65321-2/308086234