[INDUSTRIAL SEMI FLUSH MOUNT CEILING LIGHT]: Ceiling canopy diameter 4.75 inch, 6.29 inch in width, 7.28 inch in height; Size is perfect for hallway and some small spaces [BULB REQUIREMENTS]: Fits standard size bulbs; The hallway ceiling light fixture works well with any E26/E27 base LED bulb and incandescent bulb; 110V input, 60W max supported. (Bulb NOT included) [INSTALLATION & APPLICATION]: Hardwired way; Mounting screws and installation instruction are included, bulbs are unscrewed and replaced easily; The porch ceiling light is also a great addition to lighting balconies, entry ways, closets, stairs