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Xtricity Compact Fluorescent Light Bulb T2 Spiral CFL, 2700k Soft White, 9W (40 Watt Equivalent), 540 Lumens, E26 Medium Base, 120V, UL Listed (Pack of 4) - Amazon.com
Is it dangerous to use CFL bulbs in an enclosed light fixture? The instructions say not to but don't say why. - Quora
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