The original lampshade for my lamp was extremely opaque, so I always had to use a more powerful bulb to get the light I needed.

This lampshade is very open, allowing much more light to pass through. As a result, I can use a more energy-efficient bulb. It should only be used with LED bulbs, as incandescent bulbs will likely melt or deform it.

The hole in the middle, where it attaches to the lamp, is 29mm in diameter, which matches the size of my original shade.