1、Applicable Bulbs: Dual wall lamp base size E27 or E26, maximum load power 60W max, compatible with standard LED, CFL, halogen or incandescent bulbs (not included). 2、Horizontal or Vertical Mounting: The wall lamp base can be mounted vertically on both sides of the painting or horizontally on the vanity mirror. 3、Usage Scenario: Dual industrial wall lamp brackets can be used in living rooms, bathrooms, dressing rooms, stairs, halls, hallways and kitchen sink areas. 4、Fine Workmanship: Retro wall lamp holder is made of brushed metal, will not rust, fashion simple, elegant and textured. 5、Installation Suggestion: The wall mounted light socket needs to be hardwired. Professional installation is recommended, including installation of hardware accessories screws.