One of the most common types of expanding pocket is a single section folder.
Expanding pockets can be found in a wide variety of file folders. They can go in a briefcase with one or several pockets. More elaborate styles may have cover flaps, labeling flaps, and additional pockets for records or other media. The general purpose of expanding the pockets is so that the file has the option of additional space, but the ability to contract when there is less paper to file. Although pockets can be purchased for personal use, they are more popular in offices, where they are appreciated for their versatility.
One of the most common types of expanding pocket is a single section folder. It has a horizontal opening and the short sides of the folder fold up like accordion bellows. For this reason, it is also often called an accordion file. This type of pasta typically comes in dark brown, although it can also be purchased in a variety of colors.
There are also expandable pockets that come with multiple sections. Many of these types of folders also have tabs so you can identify each part. The tabs can be oriented horizontally or vertically, depending on the style of the folder. These pockets are commonly used to organize projects, bills, vendors, and other active items that tend to be kept together.
While most expandable pockets have a horizontal opening, there are some vertical styles. They tend to expand less as they tend to have fewer folds. Some have holes in the top so they can be placed in folders with clasps.
Expanding pockets are often constructed of more durable materials than standard manila file folders. Because they are such a versatile product, they are made to last longer. Pockets are usually made of reinforced cardboard or heavy plastic and have reinforced corners. There are also some types with hooks for long-term use in filing cabinets.
More elaborate expandable pockets look like file boxes or folders. They are usually made of sturdy materials and often have multiple pockets, often made of reinforced plastic or cardboard. These files also often have flaps, a flap to cover the top, and a sturdy plastic handle for carrying.
Expanding pockets can be purchased individually or in boxes of approximately ten folders. They are most commonly found in office supply and large general supply stores. A wide variety of pockets can also be purchased from online vendors.