(10 Pack) PLC-18W 827, 4 Pin G24q-2, 18 Watt Double Tube, Compact Fluorescent Light Bulb, Replaces Sylvania 20683 and Philips 38329-9 - PL-C 18W/827/4P/ALTO PLC18/4P T4 Warm White Color 4 Pin Base Compact Fluorescent Light Bulb 1200 lumens Light Output, 18 watts Energy Used, 12,000 hours Average Lifetime 4-Pin (GX24q-2) Base Type 82 CRI, 6" Length Manufactured to exacting standards, they feature top quality components and are guaranteed to perform like the original