Sylvania 21110 CF18DD/835/ECO 18W Dulux EL Double CFL T4X2 Bulb
Sylvania Part # 20589 - Sylvania Sylvania Dulux L High Lumen Ecologic Single Tube Compact Fluorescent Lamp, T5, 18 Watts, 4100K, 82 Cri, 2G11 Base - Compact Fluorescent Light Bulbs - Home Depot Pro
Technical Precision Replacement for Osram Sylvania Dulux S 13w/21-840 Light Bulb 13W PLC Fluorescent Light Bulbs - T4 Twin-Tube U-Shaped Bulbs - GX23 2 Pin Base - 4100K Cool White - 2 Pack - Amazon.com