Keep Bugs Out of Your Oil Lamp! Our mantle saver heatshield keeps bugs, who are naturally attracted to light, from dropping down the chimney and breaking your mantle. Also, the top dome or smoke bell dilutes the heat that pours from the chimney, reducing clearance to combustibles from 36" to 24". Two uses in one accessory!. Just set it on top of the chimney - no complicated installation. Made for Aladdin, it works to reduce clearances on ANY oil lamp (if chimney has a top outside diameter of 2" or less). Replaces two separate Aladdin components that were formerly available, the #N103 Bug Screen and #960 Smoke Bell. May be painted to match lamp if painted with heat resisting paint. Solid brass. 3.5" tall. 2 1/16" ID