5000K - fit older fixtures that hold the "fatter" bulbs. Only $5.88 for two. https://www.walmart.com/ip/Great-Value-LED-Light-Bulb-17W-32W-40W-Equivalent-T8-T12-Replacement-Lamp-G13-Base-Non-dimmable-Daylight-48-inches-2-Pack/181465207

Update: Not such a bargain. Not the correct spectrum for flowering. Plants that should be blooming aren't. Not recommended.