Finding the Flavor of Chocolate. Gregory Ziegler puts a small block of chocolate into a styrofoam bowl and sticks it into the microwave. Soon, a lovely sweet aroma spreads through the air, lending warmth to the otherwise bleak lab. Ziegler takes the bowl out of the microwave; it's filled with a thick, swirling liquid.
First Class Large Envelope/Flat Mail. Minimum size: 6 1/8 inches tall or 11 1/2 inches long and 0.007 inches thick. Maximum size: 12 inches tall x 15 inches long and 3/4 inches thick. Maximum weight: Up to 13 oz.
Please be aware of the minimums and maximums for First-Class Mail letters, large envelopes (flats), and packÂ­ages to ensure that the correct postage is charged. In most cases, a letter-size mailpiece is classified and priced as a large envelope (flat) if it exceeds 3.5 ounces or 6-1/8 by 11-1/2 by 1/4 thick.