{"id":2207,"date":"2026-06-01T08:17:00","date_gmt":"2026-06-01T08:17:00","guid":{"rendered":"https:\/\/aprodoor.com\/?p=2207"},"modified":"2026-10-28T07:53:13","modified_gmt":"2026-10-28T07:53:13","slug":"dimensions-des-portes-pliantes","status":"publish","type":"post","link":"https:\/\/aprodoor.com\/fr\/bifold-door-sizes\/","title":{"rendered":"Bifold Door Sizes: Standard Charts & Commercial Spec Guide"},"content":{"rendered":"

Illustrative interior closet-door sizing chart. This is not an APRO exterior-door specification or a universal installation-clearance drawing. Use the selected product\u2019s dimensions and installation instructions for ordering.<\/p>\n

Bifold door sizing starts with identifying the type of door. A light-duty closet door and an exterior aluminum bi-fold system use different frames, hardware and installation details. This guide explains how to read size labels, record an opening and prepare the information needed for product selection.<\/p>\n

Nominal size, outside frame size, panel size and rough opening are different measurements. Confirm which measurement a chart or quotation uses before comparing dimensions or ordering.<\/p>\n

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Bifold Door Sizes at a Glance<\/h2>\n

Use this table to identify the dimensions you need. The examples explain measurement terms; they are not universal standard sizes or APRO manufacturing limits.<\/p>\n\n\n\n\n\n\n\n
Application<\/th>\nStart with<\/th>\nWhat to confirm before ordering<\/th>\n<\/tr>\n<\/thead>\n
Interior closet or pantry<\/td>\nThe selected product\u2019s nominal size and required finished opening<\/td>\nActual door-set size, track and pivot allowances, and whether the label describes one panel or a complete set<\/td>\n<\/tr>\n
Exterior aluminum bi-fold doors<\/td>\nOutside frame width and height, plus the site opening measurements<\/td>\nPanel layout, glazing, threshold and drainage details, installation gaps and the applicable product evidence<\/td>\n<\/tr>\n
Large or unusual openings<\/td>\nA project-specific opening schedule and proposed system<\/td>\nFeasible panel sizes and weights, structural support, delivery and installation conditions; do not assume a generic maximum span<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

For example, 24 inches equals 609.6 mm. A \u201c24-inch\u201d product label does not, by itself, tell you the actual panel width or the required rough opening.<\/p>\n

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Standard Bifold Door Sizes<\/h2>\n

Interior Bifold Doors: Read the Product Label<\/h3>\n

Interior closet doors are often sold using nominal size labels. Check the selected product\u2019s published dimensions to establish whether a listed width describes a single leaf, a two-panel set or a complete paired opening. The door-set size, finished opening and rough opening must not be used interchangeably.<\/p>\n

The existing closet-door illustration uses fit-opening labels of 24, 30 and 36 inches wide by 80 inches high. Those labels are not individual panel dimensions or APRO exterior-frame specifications.<\/p>\n

The following are unit-conversion examples, not a catalogue of available products:<\/p>\n\n\n\n\n\n\n\n\n\n\n
Width in inches<\/th>\nWidth in millimetres<\/th>\n<\/tr>\n<\/thead>\n
24<\/td>\n609.6<\/td>\n<\/tr>\n
30<\/td>\n762<\/td>\n<\/tr>\n
36<\/td>\n914.4<\/td>\n<\/tr>\n
48<\/td>\n1219.2<\/td>\n<\/tr>\n
60<\/td>\n1524<\/td>\n<\/tr>\n
72<\/td>\n1828.8<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

For height conversions, 80 inches equals 2032 mm and 96 inches equals 2438.4 mm. Do not add a generic installation allowance to these numbers: use the instructions for the chosen door and hardware.<\/p>\n

Exterior Aluminum Bi-Fold Doors: Confirm the System<\/h3>\n

For exterior aluminum bi-fold door systems<\/a>, start with the proposed system and outside frame dimensions. The feasible opening, panel arrangement and performance evidence depend on the glazing, hardware, threshold and installation conditions.<\/p>\n

As a configuration-specific example, APRO\u2019s documented A68T test specimen has a 2600 \u00d7 2100 mm overall frame and four leaves arranged 2L-2R. This is a tested specimen size, not the standard size or maximum manufacturing limit for every A68T project. Other sizes and configurations require separate review.<\/p>\n

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Custom Bifold Door Sizes<\/h2>\n

Custom sizing is a project review, not simply an extension of a standard size chart. Discuss non-standard openings, unusual panel layouts, site exposure and required performance with the supplier before fixing the frame size or placing an order.<\/p>\n

Prepare the following measurements:<\/p>\n

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  1. Record the opening width at the top, middle and bottom, and the height at the left, centre and right. Keep all readings and state whether they refer to the structural opening, finished opening or an existing frame.<\/li>\n
  2. Record both diagonals and any visible variation in level, plumb or squareness. Have the project team assess deviations against the selected system\u2019s installation requirements.<\/li>\n
  3. Identify the finished floor level, threshold or sill recess, drainage provision and available space for folded panels.<\/li>\n
  4. Provide the measurements and drawings for review. Let the selected system\u2019s installation detail determine the ordered frame size and fitting gaps; do not automatically deduct a fixed half-inch or other allowance.<\/li>\n<\/ol>\n

    Confirm which project requirements and supporting documents apply to the proposed product. An energy rating, physical-performance report and installation detail serve different purposes; one does not replace the others.<\/p>\n

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    Panel Dimensions<\/h2>\n

    Panel dimensions affect glass weight, stacking space and operation, but their limits are specific to the selected system. Ask the supplier to confirm the proposed leaf width, leaf height, glazing build-up and hardware capacity together.<\/p>\n

    Do not calculate an individual leaf width by simply dividing the overall frame width by the number of leaves. Frame members, meeting stiles, hinges and other system details affect the actual dimensions. The allowable weight must come from the specified hardware and system documentation, not a generic 150\u2013250 kg assumption.<\/p>\n

    Bifold Door Panel Configuration Options<\/h2>\n

    Confirm the number of leaves, folding direction, stacking location and any separate access-door requirement on a layout drawing. Configuration codes are supplier-specific; do not infer the meaning of a code such as \u201c330\u201d without its documented legend.<\/p>\n

    APRO\u2019s documented A68T specimen uses four leaves in a 2L-2R arrangement. Requests for other layouts, odd leaf counts, independent traffic doors or corner openings need a separate product review. Do not assume that a size chart or a familiar panel-count label confirms their availability or carries the same tested performance.<\/p>\n

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    Understanding Rough Opening Measurements<\/h2>\n

    The rough opening is the structural opening prepared to receive the door assembly and any specified subframe or sill detail. It is different from the finished opening and the outside dimensions of the ordered frame.<\/p>\n\n\n\n\n\n\n\n\n\n
    Dimension<\/th>\nMeaning<\/th>\n<\/tr>\n<\/thead>\n
    Nominal size<\/td>\nA product label or scheduling convention; check how the supplier defines it<\/td>\n<\/tr>\n
    Outside frame size<\/td>\nThe overall external width and height of the complete frame<\/td>\n<\/tr>\n
    Panel size<\/td>\nThe dimensions of an individual moving leaf<\/td>\n<\/tr>\n
    Rough opening<\/td>\nThe structural opening before the specified frame, subframe and finishes are installed<\/td>\n<\/tr>\n
    Clear opening<\/td>\nThe usable passage after the doors are opened and the panels are stacked<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    Use the approved product and installation drawings to relate these dimensions. Fitting gaps depend on the system, fixings, sill, finishes and site conditions. A half-inch width allowance or a one-inch height allowance is not a rule for all bifold doors.<\/p>\n

    Record width and height at three positions, both diagonals and the finished-floor or sill reference level. The project team and supplier should confirm the required opening condition before framing or ordering.<\/p>\n

    For a manufacturer-specific interior example, JELD-WEN\u2019s JII103 instructions<\/a> relate the finished-opening label to the covered door set using an extra \u00bd inch in width and 1\u00bd inches in height. These are instructions for that product family, not APRO exterior-door clearances or a universal rough-opening formula.<\/p>\n

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    How to Choose the Right Bifold Door Size for Your Space<\/h2>\n

    Start with how the space will be used, then confirm the system and layout against the site:<\/p>\n