When displayed either horizontally or vertically against a wall, the union should be uppermost and to the flag's own right, that is, to the observer's left. When displayed in a window, the flag should be displayed in the same way, with the union or blue field to the left of the observer in the street.

The Proper Display of all Flags

As the globe continues to shrink, the display of foreign flags grows every day. Governmental bodies, hotels, educational institutions, and the business community are using foreign flags to welcome their foreign guests. Because of this increased usage, we provide this basic information to help you display flags in a proper and dignified manner.

1. The improper use and display of a U.S. flag and flags of your visitors is worse than no display at all.
2. When the flags of two or more nations are flown together, each flag should be displayed from a separate pole of the same height, and each flag should be the same size. In time of peace, international custom forbids the display of the flag of one nation above that of another nation. Flying the flags of two nations on the same pole is a sign of wartime victory. It will be interpreted as a serious insult. An alternative to an outdoor flag display, where flagpoles are limited, is to post the flags in your reception area and/or conference room.
3. There is not greater insult than to fly a flag upside down. FlagSource makes it easy to tell which end is up and down because our label is always dispalyed at the top of the flag.
4. Within the United States, when the U.S.A. flag is flown with flags of other nations, the poles should be the same height and in a straight line. The U.S.A. flag is always placed in the position of honor, i.e. to its own right when facing away from the building, followed in alphabetical order by the other nation's flags. The U.S.A. flag is the first to be raised and the last to be lowered.
5. When used on a speaker's platform, the flag, if displayed flat, should be displayed above and behind the speaker. When displayed from a staff in a church or public auditorium, the flag of the United States should be in advance of the audience, in the position of honor at the clergyman's or speaker's right as he faces the audience. Any other flag so displayed should be placed on the left of the clergyman.
6. Never display the U.S. flag from a float except from a staff, or so suspended that its folds fall free as though staffed. Crepe streamers may be affixed to spearheads or flagstaffs in a parade only by order of the President of the United States.
7. The U.S. flag should form a distinctive feature at the ceremony of unveiling a statue or monument, but should never be used as the covering for the statue or monument.
8. Advertising signs should not be fastened to a staff or halyard from which the flag is shown.
9. When the U.S. flag is used to cover a casket, it should be so placed that the union is at the head and over the left shoulder. The flag should not be lowered into the grave or allowed to touch the ground.
10. The U.S. flag should never touch anything beneath it - ground, fire, water, or merchandise.

Please Note
Flag designs do change, and care must be taken to ensure that the flag you fly is correct and current. The most comprehensive source for this information is The Flag Research Center, Winchester, Massachusetts.