Compact Fluorescent Plug In 4 Pin Quad, 13 watt, 6500K, CRI 82. Base - G24q-1, Length - 5.25", Initial Lumens: 900, Average Lumens: 765. Average Life: 10,000 hours. Must use electronic ballasts. Must use electronic ballasts. We also have electronic ballasts, recessed lighting, including dimmable fixtures. see http://www.dmflighting.com. Call or email for pricing of fixtures.