The report of my dimmer testing is visible by the following link, at Google Docs.
Compatibility is noted vs. lighting manufacturer claims:
Many dimmers listed here are not readily found on store shelves. Better availability will be found online at Lowe's or Home Depot. One interesting observation in the LSGC list is Lutron Model TG-603PG. That dimmer is stamped "For Permanent Incandescent Fixtures Only." This labeling contributes to my tested belief that most dimmers tried, will work. One may choose for style and function with confidence, certainly where packaging states LED compatibility.
I persist in this to avoid disparagement of LED lights in comments to prior blog posts. I have yet to find a dimmer that does not work as expected with Glimpse luminaires. Our attitudes will matter in a campaign to no longer use can lights in an attic floor. We must not think they will fail in dimming. I believe reports otherwise are from not finding and setting the dimming range adjustment, or from wiring error in a 3-way circuit.
Attic can lights should be avoided in all new construction. A leaky, perhaps non-IC can light, should be replaced with a junction box and an LED plate light. We must get rid of all weatherization instructions that allow leaky non-IC can lights to remain, where work is supported with rebates.
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Picking this button will allow you to see up-to-date posts of label "LED Plate Lights."
At 1/25/2014, ensure reader knows of better Cooper DAL06P dimmer mentioned as essential to dimmed start of the new Cooper SLD4 and SLD6 lights.
These Cooper lights of 100 lumens per watt technology are yet only 52 lumens per watt, because half of the input power is wasted. really interesting. They are as efficient as older-technology Glimpse lights, but the energy waste is troubling. The Cooper lights don't dim as well as Glimpse, 25% power minimum, and with quite-noisy buzzing. I sure hope LSGC will upgrade the Glimpse lights to newer diode capability/ efficiency. I think the 4" Glimpse is the best LED plate light for very many applications, still in 2014.