The size of the chandelier. You need to know exactly the size of the chandelier, otherwise it will be difficult to tidy, and it will ruin the style of the room. From the point of view of the correct size of the chandelier to illuminate the interior, you can use the British rule: you need to calculate the size of the walls in feet, and then fold these two digits to get the approximate diameter of the chandelier in inches. For example, you have a room 4.5 by 3 meters, that is, 15x10 feet. 10+15 = 25. 25 inches is an approximate diameter of the chandelier you need (this is about 60-65 cm).