Which is Bigger: C7 or C9 Bulb? (C7 and C9 Christmas Lights)
Which is Bigger: C7 or C9 Bulb? (We Answer Your C7 and C9 Christmas Light Bulb Questions Plus Difference Between C7 and C9 Light Bulbs) C9 bulbs are bigger than C7 bulbs since C9 Christmas light bulbs are 25 percent wider and 66.67% taller than C7 bulbs. C9 Christmas lights use E17 bases, are 1 1/4 …