Yup, heat dissipation. It appears that the ballasts are mounted tight
to the metal "shade", using it as a sort of heat sink.

Pete Stanaitis
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Mike Marlow wrote:

On Mon, 12 Jan 2009 10:38:48 -0500, Highland Pairos cast forth these pearls
of wisdom...:


What is the purpose of the 1" spacer?

SteveP.