A: Thank you for your question, it is 8.5 inch
A: Thank you for your questions, yes a dimmer can be used with incandescent bulbs.
A: 11 watt
A: Thank you for your question, the string lights come with 11 watt incandescent bulbs. (Quantity 15)
A: Thank you for your question, yes, you can use regular outdoor rated LED string light replacement bulbs instead of the incandescent bulbs. You can find these LED replacement for sale at your local Home Depot or HomeDepot.com, here is the link: https://www.homedepot.com/p/Feit-Electric-11-Watt-Equivalent-Soft-White-S14-String-Light-LED-Light-Bulb-4-Pack-S14-822-FILED-4/303047423
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