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.
What is First Class Package Service? USPS First Class Package Service is a fast, cost-effective way to ship lightweight packages weighing up to 15.99 ounces to any U.S. destination. For lightweight packages, First Class Package Service offers greater cost savings compared to Priority Mail and Parcel Select Ground (formerly known as Parcel Post).