Weatherbeater is a name brand of paint sold by Sears stores in the United States. It is an exterior latex paint, and the idea is that it is strong enough to stand up against the weather outside and still look nice. L6000, does the L look strange? Because a strangely shaped L is what is used as a sign signifying British Pounds Sterling, just like the dollar sign $ is a strange looking S :-) In the US where we don't have a pounds sterling L on our keyboards we use a capital L as an abbreviation that doesn't quite work.