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.
A. The maximum size is 11-1/2 inches x 6-1/8 inches x 1/4 inch thick. Determining the processing category of a mailpiece (letter, flat, or parcel) is dependent solely on the physical dimensions of the piece withÂ­out regard to address placement. If an envelope exceeds any of the physical dimensions, or 3.5 ouncÂ­es in weight, it is classified and priced as a large envelope (flat). q. Are items sent at First-Class Mail flats rates (large envelopes) required to be flexible and âuniformly thickâ?