Greg- I'll take it one step more, I don't have to accept them even if they are Listed. As it turns out they aren't required to be listed. per NEC. The "plates" I had questioned have no combustible material exposed to the electrical components of the switch or receptacle. Actually they were rather well crafted. Must of cost a fair amount of money to have the finish carpenter spend all that time with the router etc.
I make the statement in my classes that nothing in our trade is required to be UL Listed just to get their attention and it usually works. But it's true.


George Little