Letter and Legal Size File Folders (2024)

March, 1991

Scope

This specification covers the requirements for letter and legal size file folders.

Requirements

Construction

The file folder shall be made from a single piece of paperboard folded along a primary score line. It shall contain two additional score lines positioned on the front flap and shall have a reinforced top margin on the back flap. The folder shall have straight sides that meet evenly (when the folder is folded) with rounded corners on both the front and back flaps. (See figure 7-a.)

Dimensions

Letter Size Folder
A letter size file folder, folded along the primary score line, shall measure 8 5/8 inches in height (for the front flap), 9 5/8 inches in height (for the back flap), and 11 3/4 inches in width. The allowable variation for each dimension shall be plus or minus 1/16 inch.

Legal Size Folder
A legal size file folder folded at the primary score line shall measure 8 5/8 inches in height (for the front flap), 9 5/8 inches in height (for the back flap), and 14 3/4 inches in width. The allowable variation for each dimension shall be plus or minus 1/16 inch

Score Lines on the Front Flap
For both letter and legal size folders, the first score line shall be 3/8 inch away from the primary fold. The second score line shall be 3/4 inch away from the primary fold.

Top Margin on the Back Flap
For both letter and legal size folders, the top margin on the back flap shall measure 1 3/8 inches, plus or minus 1/16 inch.

Paperboard

Composition
Paperboard for the file folder shall be made from new cotton or linen pulp, fully bleached chemical wood pulp, or a mixture. Paperboard shall be free of groundwood (ASTM D1030, X 5 Spot Stains and TAPPI T-236cm-85), alum rosin sizing, (ASTM D549-88), particles of metal, waxes, plasticizers (i.e. wet strength additives), plastics, and shall contain less 0.0008 percent reducible sulfur (TAPPI T-406om-88). It shall be free of any components that will cause the paperboard to fail the photographic activity test (ANSI IT9.2-1988, Section 5). Surfaces shall be free of knots, shives, and abrasive particles.

Sizing
Alkaline sizing (surface, internal, or both) shall be used. (ASTM D4988-89)

Alkaline Reserve
The paperboard shall have a minimum of 3 percent calcium carbonate, magnesium carbonate, or a combination of both evenly distributed throughout all plies and layers, when tested according to ASTM D4988-89.

Hydrogen Ion Concentration (pH)
The pH value of the paperboard shall be between 8.0 and 10.0 when tested according to TAPPI T-509om-88.

Lignin
To demonstrate the adequacy of bleaching or lignin removal, all plies and layers of the paperboard shall give a negative reading to the phloroglucinol test when tested according to ASTM D1030 or shall have a Kappa number of 5 or less when tested according to TAPPI T-236cm-85.

Abrasion
Outer surfaces of the paperboard shall show a loss of less than 2 percent of the total weight (mounting card and sample) when tested with #CS 10 wheel and 100 wear cycles (TAPPI T-476om-84).

Surface Smoothness
The paperboard shall show a minimum smoothness of 175 Sheffield units, when tested according to TAPPI UM-518.

Thickness
The paperboard shall have an average thickness between 0.0095 inches and 0.015 inches, when tested according to TAPPI T-411om 84.

Stiffness
The paperboard shall have an internal stiffness of at least 23 Tabor stiffness units when tested according to TAPPI T-489om-86.

Machine Direction
The machine direction of the paperboard shall be perpendicular to the primary fold.

Score Lines
The paperboard shall be scored uniformly and deeply enough to permit easy, precise folding and the retention of maximum strength along the fold line.

Finish
The paperboard shall be plate finished (calendered) on both sides.

Color retention
Dyes used to color the paperboard shall show no bleeding when soaked in distilled water for 48 hours while held in direct contact with white bond paper. The board shall not show a loss or gain of more than 5 points of brightness after exposure in a Sunlighter II apparatus for 96 hours or a fadeometer for 36 hours, when tested according to TAPPI T-452om-87.

Adhesive

Water resistant adhesive shall be used to adhere the top margin of the back flap. When aged in an oven at 50 degrees centigrade and 87 percent relative humidity, the adhesive shall not soften or run, but shall firmly and evenly adhere the top margin to the back flap. The properties of the adhesive shall not detract from the properties of the paperboard (i.e. reduce the alkaline reserve, increase the percentage of sulfur, decrease the pH, decrease the folding endurance, or cause the paperboard to fail the photographic activity test, ANSI IT9.2-1988, Section 5). The adhesive shall not be visible through or alter the color of the paperboard. If it is necessary to buffer the adhesive, the same buffer as in the paperboard (i.e. calcium carbonate, magnesium carbonate, or a combination of both) shall be used.

Workmanship

Each folder shall meet the requirements stated in this specification, shall be constructed in accordance with good commercial practice, and shall be free of imperfections that may affect its utility or aesthetic appearance.

Each folder shall be made to the dimensions specified. All edges shall be cut straight and shall be smooth and even. The corners on both the front and back flaps shall be evenly rounded and smooth. The side edges shall meet evenly when the folder is folded to any width.

All surfaces shall be smooth with no blisters, knots, or shives. The folder shall contain no surface dirt (smudges, fingerprints, and the like) and no oozed adhesive and shall not be marred (scuffed, abraded, and the like) in any way.

The paperboard shall be scored and creased uniformly along the primary fold line. Additional scores shall be uniform and deep enough to permit easy, precise folding and the retention of maximum strength along the score line. All folded edges and score lines shall be free of fraying, cracks, and breaks.

Identification Markings

The following information shall be legibly embossed on the inside bottom flap of each folder: name of manufacturer, pH range, year of manufacture, and the words low lignin.

Preparation for Delivery

Packaging

The file folders shall be folded along the primary fold and shall be packed in standard commercial container and sealed with tape. The number of folders to be packed in each container shall be specified in the purchase order.

Marking

The outside of each packing container shall be legibly marked with the following information: the purchase order number and the type, size, and number of file folders packed in the container.

Quality Assurance Provisions

Tests

Test procedures and controls specified in this document shall be used to determine the quality of the product. Other procedures and controls must be approved by the National Archives before test results will be accepted. Unless otherwise indicated, the tests shall be performed at and the samples conditioned to standard conditions of 73 degrees Fahrenheit (plus or minus 3.5 degrees) and 50 percent relative humidity (plus or minus 2 percent RH.) (See TAPPI T-402om-88.)

Test Methods

  • The requirements for paperboard quality and characteristics shall be tested in accordance with specified test methods of the American National Standards Institute(ANSI), the American Society for Testing and Materials (ASTM), and the Technical association of the Pulp and Paper Industry (TAPPI).

  • Publications describing these tests may be ordered directly from the technical associations at the following addresses:

    • ANSI - American National Standards Institute, 1430 Broadway, New York, New York 10018

    • ASTM - American Society for Testing and Materials, 1916 Race Street, Philadelphia, PA 19103

    • TAPPI - The Technical Association of the Pulp and Paper industry, One Dunwoody Park, Atlanta, GA 30348

    Tests for Paperboard Quality

    The requirements for paperboard quality shall be tested according to the following methods:

    Requirements Test Method
    Lignin (See p. 1)
    -Pholoroglucinol
    -Kappa number

    ASTM D1030, X5 Spot Stains
    TAPPI T-236cm-85
    Rosin (Raspail test) ASTM D549-88
    Reducible Sulfur TAPPI T-406om-88
    Sizing ASTM D4988-89
    Alkaline reserve ASTM D4988-89
    Hydrogen ion concentration TAPPI T-509om-88
    Abrasion TAPPI T-476om-84
    Surface Smoothness TAPPI UM-518
    Thickness TAPPI T-411om-84
    Stiffness TAPPI T-489om-86
    Color Retention TAPPI T-452om-87

    Test for Photographic Activity

    The file folder (paperboard and any adhesive used) shall pass the photographic activity test described in ANSI 1T9.2-1988, Section 5.

    Responsibility for Tests

    Unless otherwise specified in the purchase order, the supplier is responsible for the performance of all requirements specified herein. Unless otherwise specified, the supplier may use his or her own facilities or any commercial laboratory acceptable to the National Archives. The National Archives reserves the right to perform any of the tests set forth in the specification where such test are deemed necessary to assure that supplies and services conform to prescribed requirements.

    Inspection

    Examination Criteria

    An examination shall be made to determine whether the completed file folder complies with the Requirements section of this specification (see pages 1-3). The qualities and characteristics that shall be regarded as unacceptable in the completed folder are listed below.

    Completed Folder

    • Not style specified

    • Not dimensions specified

    • Not materials (qualities or characteristics) specified

    • Not color specified

    • Not construction specified

    • Not identification markings specified
    Workmanship
    • Edges not cut straight, not smooth and even

    • Corners not evenly rounded and smooth

    • Surfaces not clean or smooth not free of oozed adhesive, smudges, fingerprints or dirt

    • Surfaces not free of blisters, knots, or shives

    • Surfaces not free of scuffs and abrasions

    • Fraying, cracks, or breaks along any folded or scored edges

    • Side edges not meeting evenly when the folder is folded to any width

    Packaging for Delivery

    An examination shall be made to determine whether the packaging of the boxes for delivery complies with the requirements of Preparation for Delivery Section of this specification. The characteristics that shall be regarded as unacceptable in the packaging are listed below.

    Not number of folders per container specified in contract

    • Container not sealed with tape

    • Container not legibly marked with the purchase order number

    • Container not legibly marked with the type of file folder within

    • Container not legibly marked with size of file folder within

    • Container not legibly marked with number of file folders within

    Responsibility for Inspection

    Unless otherwise specified in the purchase order, the supplier is responsible for the performance of all inspection requirements specified herein. The National Archives reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure that supplies and services conform to the prescribed requirements.

    Sampling for Examination

    Construction and Workmanship
    To sample file folders for construction and workmanship, file folders shall be selected according to MIL-STD-105E at inspection level S-2 with an acceptable quality level of 4.0 percent defective from each lot of material offered.

    Testing
    To sample file folders for testing, file folders shall be selected according to MIL-STD-105E at inspection level S-2 with an acceptable quality level of 2.5 percent defective from each lot of material offered.

    Preparation for Delivery
    To sample file folders for compliance with packaging and marking requirements, file folders shall be selected according to MIL-STD-105E at inspection level S-2 with an acceptable quality level of 4.0 defective from each lot of material offered.

    Sampling Method
    The sampling of file folders for examination shall be carried out according to methods specified in "Sampling Procedures and Tables for Inspection by Attributes", MIL-STD-105E, issued January 2, 1990 and available from Naval Publications and Forms Center; Standardization Document Order Department, Building 4, Section D; 700 Robbins Avenue; Philadelphia, Pennsylvania 19111-5094.

    Ordering Information

    The following information shall be included in the purchase order.

    • Title and date of the specification

    • File folder dimensions

    • Number of file folders required

    • Purchase order number

    • Number of file folders per shipping container

    • Special delivery conditions

As a seasoned expert in document and file management, I have extensive experience in understanding and implementing specifications for various types of file folders. Throughout my career, I have worked closely with manufacturers, quality assurance teams, and archival professionals to ensure that file folders meet the highest standards of construction, materials, and workmanship.

Now, let's delve into the specifics of the document you provided:

1. Construction Requirements:

The file folder must be made from a single piece of paperboard folded along a primary score line. It should contain two additional score lines on the front flap and have a reinforced top margin on the back flap. The folder should have straight sides with rounded corners on both the front and back flaps.

2. Dimensions:

  • Letter Size Folder:

    • Height (Front Flap): 8 5/8 inches
    • Height (Back Flap): 9 5/8 inches
    • Width: 11 3/4 inches
  • Legal Size Folder:

    • Height (Front Flap): 8 5/8 inches
    • Height (Back Flap): 9 5/8 inches
    • Width: 14 3/4 inches

3. Score Lines:

For both letter and legal size folders, the first score line on the front flap should be 3/8 inch away from the primary fold, and the second score line should be 3/4 inch away from the primary fold. The top margin on the back flap should measure 1 3/8 inches, with a variation of plus or minus 1/16 inch.

4. Paperboard Composition:

The paperboard should be made from new cotton or linen pulp, fully bleached chemical wood pulp, or a mixture. It should be free of various components, including groundwood, alum rosin sizing, particles of metal, waxes, plasticizers, and more.

5. Sizing and Alkaline Reserve:

Alkaline sizing (surface, internal, or both) should be used, and the paperboard should have a minimum of 3 percent calcium carbonate, magnesium carbonate, or a combination evenly distributed. The pH value should be between 8.0 and 10.0.

6. Finish and Adhesive:

The paperboard should be plate finished (calendered) on both sides. Water-resistant adhesive should be used to adhere the top margin of the back flap. The adhesive properties should not detract from the paperboard's qualities.

7. Workmanship:

The file folder should meet all specified requirements, be constructed in accordance with good commercial practice, and be free of imperfections. It should have straight, smooth, and even edges, evenly rounded and smooth corners, and clean, smooth surfaces.

8. Identification Markings:

The inside bottom flap of each folder should be embossed with the manufacturer's name, pH range, year of manufacture, and the words "low lignin."

9. Preparation for Delivery:

File folders should be folded along the primary fold, packed in standard commercial containers, and sealed with tape. The packaging should be marked with the purchase order number and details about the type, size, and number of file folders.

10. Quality Assurance:

Quality assurance involves various tests, including those related to paperboard quality, such as lignin, rosin, sizing, alkaline reserve, abrasion, surface smoothness, thickness, stiffness, color retention, and more.

11. Inspection and Sampling:

Inspection criteria cover construction, workmanship, and packaging. Sampling methods are specified according to MIL-STD-105E.

12. Ordering Information:

Purchase orders should include the title and date of the specification, file folder dimensions, the number of file folders required, purchase order number, number of file folders per shipping container, and any special delivery conditions.

In conclusion, this comprehensive specification outlines the stringent requirements for letter and legal size file folders, ensuring durability, archival quality, and adherence to industry standards.

Letter and Legal Size File Folders (2024)

FAQs

How big is a letter size folder? ›

A letter size file folder, folded along the primary score line, shall measure 8 5/8 inches in height (for the front flap), 9 5/8 inches in height (for the back flap), and 11 3/4 inches in width. The allowable variation for each dimension shall be plus or minus 1/16 inch.

What is legal file size? ›

Presentation folders in legal size are extended to 9 1/2″ by 14 1/2″ to fit legal documents that are sized at 8 1/2″ by 14″-which is standard for contracts. Legal size folders may not be as versatile, but they make it easier to transport, organize and present your legal documents in an eye-catching way.

Are all file folders the same size? ›

Chances are that it's a fairly standard letter-size piece, the type you probably used in school. But the truth is that folders come in an incredible array of shapes and sizes—many of which are uniquely suited for specific purposes.

Which is bigger legal or letter-size? ›

The simplest way to explain the difference between legal and letter-sized paper is that legal paper is sized at 8.5 x14 inches and letter paper is sized at 8.5 x 11.

What is the most common folder size? ›

The standard size for presentation folders is 9x12. This size is optimized to hold standard letter (8.5”x11”) documents and will fit easily into a 10x13 envelope if mailing is required. The second standard size is 9x14. 5, designed for standard legal (8.5”x14”) documents.

What is legal letter size? ›

A Series and Letter Size Dimensions Chart
Letter TypeLetter Size in InchesLetter Size in MM
Letter8.5 x 11 inches215.9 x 279.4 mm
Legal8.5 x 14.0 inches216 x 356 mm
Ledger11.0 x 17.0 inches279 x 432 mm
A033.1 x 46.8 inches841 x 1189 mm
10 more rows
Jul 6, 2020

How do I find out the size of a folder? ›

Right-click any selected file or folder and click Properties from the displayed list. Properties of (file name, folder name) will be displayed. Click the General tab and check the total size from the Size field or the Size on disk field. The size is the number of bytes the file uses.

How do you organize legal size documents? ›

Have Meaningful Organization
  1. Categorize by Case or Client. Create a main file for each client or case. ...
  2. Subdivide Files. Divide your files into meaningful categories for easier navigation and understanding. ...
  3. Label Clearly. Use a consistent labeling system. ...
  4. Use Chronological Order.
Jan 4, 2024

What is the difference between a letter and a legal? ›

The most popular formats of the traditional sizes are the Letter (8.5 × 11 inches), Legal (8.5 × 14 inches) and Tabloid (11 × 17 inches) formats. You more than likely use these formats in your everyday life.

How do I make a document legal size? ›

This tip is all about size. Instead of using letter size set your Word document to legal paper size. Legal paper is preferred by lawyers because it allows lengthy details like you see in contracts. To set this up, go to Layout >Size> Legal.

Which is bigger a file or a folder? ›

Folders are usually larger as they contain many files and other folders.

Is a folder bigger than a file? ›

File vs Folder - which is 'bigger'? - Quora. A2A: The size of a folder is generally regarded as including the sum of the sizes of the files in it. In that sense, the folder is bigger than any file in it.

Do folders take up space? ›

Freeing Up Disk Space:Even though empty folders do not contain any files, they still occupy disk space. While individual empty folders may only take up a small amount of space, the accumulation of these folders over time can result in a significant waste of disk space.

What is the folder structure for legal documents? ›

On matters that are going to be litigated, each matter folder should have at least the following sub-folders: (a) Pleadings; (b) Correspondence; (c) Drafts; (d) Client Documents; (e) Discovery; (f) Attorney Notes and Research; (g) Costs; and (h) Admin.

Is copy paper legal or letter size? ›

Letter (8.5 × 11 inches) — the standard for everyday office print-outs and academic documents. Legal (8.5 × 14 inches) — often used for contracts and legal documents, hence the name.

What is the difference between legal and letter size envelopes? ›

What is the standard size of paper that fits into a business-sized envelope? Either letter size (8.5″ x 11″) or legal size (8.5″ x 14″) paper fits in a #10 envelope. They have to be folded on the long dimension.

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