I still don't know why people insist on this kind of junk. Here are my thoughts on these from what I know about them.
1-Wiring that comes with pucks can not be concealed in wall. (Low voltage or 120v)
2-Pucks are not to be installed inside cabinets.
3-Recessed pucks are to be installed only where the back side of the puck is not enclosed. Such as the top of an open shelf (no door) cabinet.
With all the better options for undercabinet lighting available why use pucks.
For display cabinets I use a Juno 3" recessed can in the top of the cabinet. It is line voltage and takes up to a 60 watt par 16 flood bulb. It is priced at about 40 bucks and really lights the cabinet. If the top of the cabinet is open maybe somthing can be built to hide the can which sits about 4-5" high.
