1 The installer no longer has to try to hold hanger, joist and nail with one hand and swing a hammer with the other! 2  JHA270 range features a location tab which allows easier alignment of the hanger.  The model number and size is stamped into the seat of the hanger for easy identification, even after installation.
first class(Adjective) Belonging to the best or top group in a system of classification. first class(Adjective) Of, or relating to the most luxurious and expensive class of accommodation on a train, ship, hotel, etc. first class(Adjective) Of, or relating to a class of mail to be delivered before second class.
From the USPS website, I understand that first class mail means delivery within 3 business days! I tried calling the USPS customer service, but after a long wait of one hour on the call, I gave up. I will probably visit the local post office and try to gather some information.