What does this shade fit?

It is a 4-inch glass chimney for small oil and kerosene lamps. Check the chimney seat and burner size on your lamp before ordering, since a larger burner needs a wider chimney.

Does the etching make the lamp dimmer?

Yes, slightly. Satin-etched glass scatters light instead of passing it straight through, so the glow is softer and less harsh but a bit less bright than a clear chimney.

Is this a complete lamp?

No. It is the glass shade only. You still need a lamp base, burner and wick to use it.

Can I use it with an electric lamp?

It is made for oil lamps. It can sit on some electric lamp bases as decoration, but it is not designed to shield a bulb.

How do I clean etched glass?

Wash it gently in warm soapy water and dry it with a soft cloth. Avoid abrasive pads, which can dull the satin finish, and do not overtighten it in the holder.

Is it worth choosing over a plain clear chimney?

If you want a softer, more old-fashioned glow and a decorative fluted look, yes. If you want maximum light from a small flame, a clear chimney does better.