On Fri, 20 Jun 2008 14:54:42 -0700, Jim Thompson
wrote:

Here in Arizona's mild winters even regular fluorescents tubes flicker
in my garage.

...Jim Thompson

Hi Jim:

If it's an inexpensive shop light from a big box retailer (the ones
with the notoriously crappy magnetic ballasts), replace it with a good
quality T8 fixture.

Lithonia offers inexpensive T8 channel and wrap fixtures that operate
down to 0F. You should be able to pick one up for about $20.00.

See:
http://www.acuitybrandslighting.com/...cent-Wraps.pdf

For cold weather applications, stick with a standard 32-watt T8, as
opposed to the 25, 28 or 30-watt energy savers -- GE, Osram Sylvania
or Philips.

Cheers,
Paul