It lights because gas is energized and therefore gives off very little heat. The temperature increase from a neon bulb is negligible, so this is really up to you. The light kits come with a spare plug, so that you don't lose a power connector. We use cast acrylic. Cast acrylic is created by casting liquid acrylic between two glass panes, for a smooth, even surface.
Extruded acrylic is forced through a mold.
During this process almost invisible horizontal lines are created. We use cast acrylic because it's the best acrylic for our customers. A. Cast acrylic doesn't scratch as easily, and is clearer. Lexan is virtually unbreakable but scratches easier. Hence we recommend the acrylic.