Use an opal light bulb if you have an ordinary lamp shade or lamp and want an even, diffused distribution of light.

Use a clear light bulb if you have a lamp shade or lamp with a perforated or cut-out pattern or other airy, open design and want the pattern to cast effects on the wall and ceiling.

The lamp base should not be used with a glass lampshade since it is too heavy and can cause the lamp base to tip.

Special waste handling may be required. Please contact your local authorities for more information.