How to properly measure a lampshade

To order replacement lampshades, the following dimensions are necessary:

1. The diameter of the top of the lampshade
2. The diameter of the bottom of the lampshade
3. The length of the side of the lampshade

There are primarily two types of lampshades:

1. “Hardback” lampshades are either plastic/styrene backed or paper backed lampshades with fabric being laminated to the exterior of the lampshade. Hardback lampshades are generally less expensive, and used a lot for hotels and motel applications. Hardback lampshades are used to replace lampshades that are to be modest in price. The life expectancies of hardback lampshades are generally ten to fifteen years. Cleaning of a hardback lampshade is easy using just a duster or a vacuum is usually all that is needed.
2. “Softback” lampshades are fabric lined and consist of a full steel frame. These lampshades involve not only the use of adhesives but some machine and hand sewing will go into the process of making softback lampshades. Softback lampshades are a bit more price. These lampshades are used by better lighting companies to finish off their most desirable lamps as well as finer hotels. The life expectancy of softback lampshades are generally twenty or more years. Like the hard back lamp shade, cleaning of a softback lampshade is easy using just a duster or a vacuum is usually all that is needed.

Please provide the actual lampshade or a photo with its dimensions indicated in order for us to provide you with an accurate estimate.