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.
2015 Â®USPS POSTAGE RATE INCREASE GUIDE â¢ 4 First-Class Mail is a service that delivers envelopes weighing up to 3.5 ounces and flats up to 13 ounces. This service is ideal and cost-effective for letters, bills, large envelopes, and postcards.This mail class offers delivery between one and three days within the U.S. Changes to First-Class Mail in 2015 Letter Rates First-Class Mail Letter (1 oz.) retail rate stay the same at $0.49 in 2015.his service is ideal and cost-effective for letters, bills, large envelopes, and postcards. This mail class offers delivery between one and three days within the U.S. Changes to First-Class Mail in 2015 Letter Rates First-Class Mail Letter (1 oz.) retail rate stay the same at $0.49 in 2015.