Fulight Dimmable &curren; T8 LED Tube Light - T8 4FT 48" 18W (32W Equivalent), Cool White 4500K, FO32/741/CW, F32T8, F34T12, Double-End Powered, Frosted Cover,110/120VAC - Fluorescent Replacement Bulbs 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!*** FULLY DIMMABLE Clean Cool White 4500K (Works at 110/120VAC) FLEXIBLE SIGNIFICANT ENERGY SAVING:Roughly replaces 32-40W fluorescent, Saving &gt;40% 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!