I have a square light fixture and was looking for a square lightbulb and found it here. The order arrived in good time and the bulb is indeed square and looks interesting with my square light fixture. Just make sure that it is the right lumens and the right wattage for the purpose of your light. LED lights come in a variety of powers. Keep in mind 2700 K is the standard soft white incandescent light we are all used to. Anything brighter than that number is too bright and too blue/white.