A PAR30 bulb would be used in an exterior flood light. A R30 bulb would be used in recessed lighting in your living room or kitchen. after the PAR or R is the diameter of the bulb. The cone shape of the bulb has a reflective surface that directs the bulb in a spotlight at a certain part of your yard, sidewalk or entryway. Flood lights are known in the lighting industry are PAR (parabolic reflectors). T4 Duo Tube - 2 Pin Base - Beveled End - Cross ReferenceĮxterior bulbs exposed to the elements may require moisture protection to stop rain and snow from damaging the bulb. This cross reference guide is designed to help you find the lamp you need for your application.Ĭrosss Reference Guides for Pin Based CFL Lamps Some links go to our hard to find page indicating a bulb we no longer purchase new from the manufacturer.Discontinued by General Electric. I want to save money and energy by switching to CFL bulbs but how do I know which bulbs I need?
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