LAMPSHADE SIZE - Our table lamp shade 12-inch (30cm) diameter top, 12-inch (30cm) bottom diameter, 8-inch (20cm) high; 1.65 inch (42mm) ring diameter. Medium size fits most table lamps, pendant lights, and floor lamps. (NOTE: The diameter of the mounting hole is 42mm, NOT suitable for standard harps)FIT FOR E26/E27/E14 LAMP HOLDER - The fabric lampshade is suitable for E27 lamp sockets (The diameter of the lamp socket ring is 1.65 inch). We also provide E27 to E26 and E27 to E14 lamp adapters to meet your needs for different lamp specifications. (NOTE: Please check the ring diameter of the light frame carefully before ordering.)EASY TO INSTALL - Our drum lampshade is rolled up for better protection and to prevent denting during transport, and requires a few minutes of easy and quick assembly by yourself. Just need to fasten the fabric lampshade around the metal ring and stick it. It can be detached and stored when not in use.DURABLE MATERIAL - The flo