Every contractor who installs a product should do his part for energy
efficiency. This is not excusable.
Reducing the ceiling cutout, to tight plaster seal of a 4" junction box, requires some experience. The process is described here . Viewed online, the complete pdf album has poor photo rendering. For clear photos, as above, please download the pdf file.
Here is the completed installation of a T91 LED plate light. I think this is much prettier than a can light. Had 4” LED plate lights been available, I would have preferred two of them here, about 4 ft apart, for no thought of dimming.
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