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.
For some magnet sizes, you aren't going to be able to find envelope sizes that fit well. And then when you have small magnets, like the popular 3.5x2 inch magnets, you face more of a problem with the envelope size. You can find mini envelopes, but you can't mail them out.) A popular combination for cards and magnets is: a printed folded card with slits to hold small magnets. A 5.5x4.25 inch card can hold a reasonable amount of information. Combined with a small magnet, you end up with a compact and effective save the date mailing.