Yes — they should fit most standard fixtures.
If the Green Watt 9W Dusk-to-Dawn bulbs:
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xxxx into a standard E26 medium base
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Are an A19 shape
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Are similar in size to traditional incandescent A-lamps
Then they will physically fit in most indoor and outdoor fixtures that previously used a standard A19 bulb.
What to Double-Check Before Installing-
Fixture Rating (Indoor vs Outdoor)
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If using outdoors, the fixture itself must be rated for outdoor use.
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The bulb should also be rated for enclosed fixtures if your fixture is fully sealed.
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Photocell Function
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Dusk-to-dawn bulbs have a built-in light sensor.
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They work best in fixtures where the sensor is not blocked by metal housing or heavy glass.
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They should not be used in fixtures already controlled by a wall dimmer.
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Size Clearance
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A19 is the standard household bulb shape (same as old 60W incandescents).
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If the fixture previously used a regular 60W bulb, this will fit.
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If you want, send me the fixture model or a picture and I’ll confirm with certainty.
