To receive digital TV signals from all stations, it is important that your antenna be able to receive both VHF channels (channels 2-13) and UHF channels (channels 14- 51). Some antennas only provide good reception of VHF or UHF channels, but not both.
Greeting Card Envelope Size: 5.25 x 7.25 Note Card Envelope Size: 4.375 x 5.75. When creating your design file, make the page size equal to the size of the envelope. The text for your return address should not be closer than 5/16 or .3125 from the edge of the envelope. U.S. Mail Layout Guides. Greeting Card Envelope Note Card Envelope.
The standard size for this type of cards is: 13.5 by 10.5 inches which is equivalent to 34.5 cm by 26 cm. Others are measured by its width and height only with specifications of around 4 by 6 inches, 4.9 by 6.9 inches (equivalent in centimeters to 12.5 by 17.5), or 7 by 5 inches.