In order to create a kosher “doorway” the crossbeam must rest on or pass directly over the top of the the doorpost “lechi”. Often it is desirable to use a lightpostas a lechi with a wire as a crossbeam. In many cases the light pole is designed with a tapering main pole capped by a ball shaped finial (pole cap) with a narrow neck. In these cases it is acceptable to tie the string around the narrow neck of the finial. Because the neck is narrower than the top of the actual post, the string is guaranteed to cross directly over the pole top creating a kosher lehi.