Sylvania Dulux D Quad Tube Compact Fluorescent Light Bulbs
Sylvania Dulux D quad tube compact fluorescent light bulbs the original plug-in CFL for various commercial light fixtures. These have a dedicated plug-in base that is operated on a specific ballast for that wattage and size. You recognize them by 2 pin configuration on either side of a plastic block. These have a lower wattage from 13 to 26 watts with a variety of colors. These are operated by either electronic or magnetic ballasts with a dedicated socket for this type of lamp.