An exit route must meet minimum height and width requirements. [29 CFR 1910.36(g)] The ceiling of an exit route must be at least seven feet six inches (2.3 m) high. Any projection from the ceiling must not reach a point less than six feet eight inches (2.0 m) from the floor.
4. adjective. In Britain, first-class postage is the quicker and more expensive type of postage. In the United States, first-class postage is the type of postage that is used for sending letters and postcards. Two first class stamps, please. The price of mailing a first-class letter will not be increasing this year.
Standard Mail should not be used for time-sensitive mail. As with Presorted First-class, to receive the lower postage rate, the addresses must be NCOA updated, CASS certified, and put into presort order. Standard Mail is the least expensive postage mode, approximately 32 percent less than the price of first class. Standard mail postage rates apply to mail up to 3.3 ounces. Mail heavier than 3.3 ounces will have a small weight surcharge.