Last year I posted some pics here of some counterfeit "UL" fixtures I had found. There are a couple of things the fixtures simply must have- listing or not.
Wire connections must be inside some sort of box. The base of the fixture can be part of this box.
The fixture must be supported in such a manner that loads are not transferred to the wires.
If it has a metal shell, there must be a good bond (ground) connection to the building's wiring.
