Bulbrite 524248 20PK - 18W - T4 Quad Tube - 4-Pin - G24Q-2 Base - 120V - 4100K - 10,000Hr - Dimmable - Cool White - CFL 18 Watt, 1,150 Lumen, 120 Volt, 4100 Kelvin, 82 CRI, 10,000 Average Rated Life Hours, G24Q-2 Base Dimmable Fully dimmable capability allows for increased energy efficiency 20 - Compact Fluorescent T4 Quad-Tube Cool White Light Bulbs