Custom One-Panel Folder Boxes

Sizing Around A-Sizes and Depth

Most folders are built around A4 or A3 paper, with a little extra room so sheets slide in easily. The depth is the key decision. A slim folder of 10 to 15 mm holds a short document or a few prints. A deeper folder of 25 to 50 mm holds a thick report, a ring binder or a mix of documents and samples.

If you send documents of varying thickness, choose the depth that fits your thickest pack and use a card spacer for thinner ones. A folder that is too deep for its contents allows papers to slide and bend, which defeats the purpose.

For non-standard items, measure the largest piece flat, then the total stack height. We add a margin for the board and a little ease so the folder closes without straining.

It helps to make up a dummy pack before ordering. Gather the actual documents, samples and inserts that will go in, stack them as they will be packed and measure. A ruler and five minutes at this stage avoid a folder that is a few millimetres too tight to close. Our guide on how to measure a ring binder closed covers the spine and rings.

Board Weights and Finishes

Lighter folders for presentation and filing are made from heavy folding boxboard, which folds cleanly and prints sharply. Folders that will be posted, or that hold heavier contents such as samples, are better in E-flute corrugated, which adds rigidity and resists crushing in the post.

Uncoated board gives a natural, tactile feel that suits design studios and craft brands. A matte laminate looks crisp and businesslike for professional services. Foil on a logo or embossing on a firm name adds weight to a pack that represents an important moment, such as handing over the keys to a new home.

• Heavy folding boxboard for presentation folders
• E-flute corrugated for posting and samples
• Matte, gloss or soft-touch laminates
• Foil, embossing and debossing

Inside Features and Closures

A plain folder works for many uses, but a few small features can make it much more useful. A business card slot on the inside of the lid puts the contact details right where the recipient looks. A pocket or a pair of corner slits holds a covering letter in place. A thumb notch on the front tuck makes it easier to open. A ribbon or elastic band can keep the folder closed when it is carried around.

For packs that will be filed, a printed spine label area lets the recipient see what is inside when the folder is stored on a shelf. For mailed folders, a peel-and-seal strip on the tuck flap seals the pack securely.

Some clients ask for a tab divider set inside the folder, so a long report is split into sections they can flip between. Printed tabs in the same colours as the folder make the pack feel like one coordinated piece, and they help the recipient find the page they need during a meeting. Sets that need sorting inside use file folders with a tab within the box.

Printing a Folder That Represents Your Firm

The outside lid is the cover of your pack and deserves a clean design: logo, firm name and perhaps a short line. The inside of the lid is often printed with a pattern, a welcome message or a contents list. Spine and edge printing in a brand colour makes a set of folders look smart when lined up together.

Many professional firms choose a single design for all clients and add a printed label or a personalised letter for each person. Others print a short run for a particular project or event with a dedicated design. Both work well; the folder simply needs to look consistent with your other printed material.

If the folder will be handed over in person, such as at a property completion or a course graduation, consider how it looks in a photograph. A strong, simple cover design with plenty of space around the logo tends to photograph better than a busy one, and clients do take pictures of these moments. Most firms print the folder with letterheads in the same design so the documents inside match.

Measure Your Thickest Pack, Then Choose a Depth Between 10 and 50 mm

A one-panel folder box is specified by depth more than anything else, so stack the thickest set of documents, samples or a binder you will put in it and measure the stack. Slim folders of 10 to 15 mm suit a proposal; 25 mm suits a welcome pack with brochures; around 50 mm takes a ring binder. Choose A4 or A5 and whether the folder is posted, because a posted folder needs E-flute board and a peel-and-seal strip rather than a tuck. Add a business card slot inside the lid if clients will keep the folder, and keep the artwork on a flat dieline so you can see how it folds. Firms that send documents regularly pair the folder with C4 envelopes for the flat version.

Send the contents size, depth, board and finish preferences and artwork, and a custom quote comes by email within one working day. The free proof shows the flat dieline with every panel labelled. Production takes 4 to 7 working days after approval, folders arrive flat by tracked courier to UK mainland addresses, and faulty or damaged folders reported within 10 days are reprinted or refunded.