Can these be dimmable?

Yes, if you have a dimmer switch and dimmer bulb, the item will be dimmable

What if the light do not work or missing accessories when i open the package ?

if you have any problems, please contact Yosoan E-Business to get help

Do they block light from spreading widely?

the rattan lampshade is designed to maximize light while protecting the bulbs and it also emits a smooth and well-proportioned light when lit.

Can it be installed bathroom or outdoor ?

Hi, we recommend you install it under the roof, and any place where do not face the water directly

What kind of bulb does the wall sconces use?

All the bulbs based E26 is compatible for our Yosoan light, you can use LED; Compact Fluorescent (CFL); Halogen; Incandescent