Dimmable fluorescent downlights

I found this dimmable fluorescent downlight at EFI (for $67). It comes with a 2,700K-degree TCX 4-pin 20W bulb. The room is about 12 feet by 12.5 feet, so I installed four, equally spaced by their illumination circles after mapping out the ceiling joists. For a flush, tight rim at the ceiling, I installed them using stiff wire batt insulation supports (about four rods per fixture) pressed downward on the housing lip instead of nails or screws. The only drawback to this method of fastening is that the fixtures would drop when, or if, the ceiling wallboard ever gets pulled off the ceiling joists. But that possibility is just too remote to worry about.

Switching had to be located at both doors. One location got a standard 3-way flat-rocker switch (the style that I'm pursuing throughout the house), the other an expensive dimming slider. Unfortunately, the only dimming flat-rocker style 3-way switch I found produces a slight buzz at less than full brightness. It wasn't designed for dimmable fluorescents. The only recommended dimming switch for this particular fixture is not 3-way compatible, nor flat-rocker style. I had to compromise. The buzz at the switch is noticeable only when the room is very quiet. Contrary to what many people think of fluorescent downlights, these work great!