Letter box Totally Explained

Everything about Letter Box totally explained

A letter box, letterbox or mailbox is a private box or slot for receiving incoming mail.
Three primary designs of letter boxes exist:

a slot in a wall or door through which mail is delivered
a box mounted near the street
a box mounted directly on the house

Slot

Almost all buildings in the United Kingdom feature letter boxes. They are commonly horizontal slots approximately 30 cm × 5 cm, found in the middle or lower half of a front door. Most are covered by a flap on the outside to offer a degree of weatherproofing. The flap may by sprung to prevent it opening and closing noisily in the wind. Many letter boxes also have a second flap on the inside to offer further protection from the elements. There may also be a small wire cage mounted on the inside of the door to catch the delivered mail.
The British Post Office first encouraged people to install letter boxes to facilitate the delivery of mail in 1849. Before then, letter boxes of a similar design had been installed in the doors and walls of post offices for people to drop-off outgoing mail. An example of such a wall box (originally installed in the wall of the Wakefield Post Office) is dated 1809 and believed to be the oldest example in Britain.
A number of designs of letter boxes have been patented, particularly in the United States. In the United States, letter boxes are known as mail slots.

History

The first public mailboxes in Russia appeared on 29 February 1888. They were made of wood and iron. Because these boxes were lightweight and easy to steal, they disappeared frequently; future mailboxes were made of cast iron and could weigh 40 kilograms.
Mailboxes didn't become popular in most of Europe until the mid to late 1800s, although they were used in Paris, France from the late 1700s.
In the U.S., Bonger Industries, Inc. is one of the oldest manufacturers of U.S.P.S approved mailboxes still in business. They started in 1876.

Detached letterbox

To reduce the need for the mail carrier to walk extra distances when the front door is some distance from the street, letter boxes may be mounted on convenient posts at the property boundary. Many jurisdictions in the United States hold regulations stating the distance a letter box may be from the road. These boxes might have a slot to put the mail in, and a larger lockable door to take the mail out again. This design is popular where the distance between houses is larger, in countries like the United States.
On a property with several units or businesses, a letterbox with multiple compartments is often used. The mail carrier will have a key to a large door on one side that reaches all the compartments, and the tenants will each have a key to the door into their individual compartment on the other side.
In the U.S. some letter boxes are fitted with a semaphore arm - usually a red flag - that's raised to indicate to the mail carrier that there's outgoing mail in the letter box. However, this use in letter boxes has since dwindled in recent years because of fear of postage theft, especially since these traditional mail boxes often don't have a lock on them.

Attached letterbox

Attached mailboxes are common in urban and older suburban neighbourhoods and especially in high-density neighbourhoods. They are especially common in urban and suburban areas of Canada, where the detached form of mailbox is rarely seen. They are less common in newer developments and in smaller towns and cities where mail is distributed through a combination of rural routes, post office boxes, and community supermailboxes.

Standards

The European standard for letter boxes, EN 13724:2002 "Postal services – Apertures of private letter boxes and letter plates – Requirements and test methods", replaces earlier national standards such as BS 2911:1974 "Specification for letter plates" or DIN 32617. It specifies among other things:

that envelope size C4 (229 mm × 324 mm) must be deliverable without bending or damage;

that the internal volume must able to hold at least a 40 mm high bundle of C4 envelopes;

an aperture width of either 230–280 mm (> C4 width) or 325–400 mm (> C4 height);

an aperture height of 30–35 mm;

a mounting height of between 0.7 and 1.7 m for the aperture;

and various privacy, theft-protection, rain protection, vandalism resistance and corrosion-resistance test requirements. US Postal Customer have some guidelines. Some includes the requirement of street address number on the side of the box or the box faces the approaching mailman. If the letter box location is on another street (for example, if the house is on a corner), regulations require that both the house number and street name be on the box or post. There is no requirement to put the owner of the mailbox unless. Placing offensive graphics, caricatures or effigies intended to ridicule or disparage an individual or group of people is prohibited. Advertising on mailboxes is also prohibited.

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