Fulight True-Color &curren; LED Tube Light (Dimmable) - T8 2FT 24" 9W (18W Equivalent), Daylight 4500K, F17T8, F18T8, F20T10, F20T12/CW, Double-Ended Power, Frosted Cover - Full-Spectrum wth 95CRI MUST be directly wired to the 120V AC Power: Disconnect Ballast & Starter if there is any! Installation Manual is attached as the 2nd photo at the left upper corner of this product page! ***DON'T BUY UNLESS YOU UNDERSTAND THIS!*** FLEXIBLE ENERGY CONTROL & TRUTH & HEALTH: Fully Dimmable + Vivid True Color (Works from 110-120V) Clean Daylight White 4500K with Color Rendering Index ~95%: Brings you the most joyful lighting! Roughly replaces 32-40W fluorescent, saving &gt;50% electricity. Electro-Magnetic Compatible (EMC): No radio frequencies interference + No flickering, no UV light, no buzzing ballast! SUGGESTED DIMMERS: If your fixture has a diffusive/transparent cover, you may use a regular dimmer: Leviton IPI06-1LZ, Leviton TBL03-10E (wall-plug), Leviton 6674-P0W, Lutron DVCL-153P, Lutron MACL-153M, Lutron TG-600PH, Lutron TTCL-100H (wall-plug). If your fixture doesn't have a diffusive/transparent cover, please consider to use an electronic low-voltage dimmer: ** Lutron SELV-300P **, **Lutron DVELV-300P**. - Check the 3rd photo at the left corner to get more detailed information!