you need a pair to flank the sides 12"" should work

Thank you @Sabrina Balsky Interior Design it's getting down to the wire of our bathroom remodel and I'm second guessing myself. This is my faucet, would you happen to have a recommendation for a contemporary wall sconce?

is it chrome? if so this would work and it takes 100 watts which is good since the new wattage is being reduced to 40 watts which is inadequate https://www.houzz.com/products/modern-1-light-wall-sconce-in-chrome-prvw-vr~119573375

Yes it's chrome. Thank you for the recommendation!

What did you end up with? I know this is an old post, but I was just curious. If had seen this post at the time you posted it, I would of suggested a mirrored medicine cabinet with its own integrated lighting. which can also offer a nightlight with dinner function. So, you will not only have lighting from your main bathroom, but an additional light source. So, the sconces next to or above the cabinet would have been unnecessary.