Fitting Set, for Interior Folding Doors, Häfele Slido D-Fold21 50A / 50B

Folding and hinged door fitting, corner and centre suspension, for door weight up to 50 kg, Basic set, with pivot bearing at top and bottom, for systems without bottom track

Art. no. 940.42.510

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Fitting Set, for Interior Folding Doors, Häfele Slido D-Fold21 50A / 50B

Folding and hinged door fitting, corner and centre suspension, for door weight up to 50 kg, Basic set, with pivot bearing at top and bottom, for systems without bottom track

  • Centre suspension (space-saving 1.5-door version)

  • Corner suspension

  • With butt hinge (plus magnet for door alignment)

  • With door hinge including alignment function

  • Corner suspension

  • Centre suspension

  • Slido D-Fold21 50A - Centre suspension

  • Slido D-Fold21 50B - Corner suspension

  • Slido D-Fold21 50B - Centre suspension

  • Slido D-Fold21 50B - Centre suspension

    Example of wall connection with milled profile in the centre

    see key

    A = wall distance between wall and door edge
    B = door thickness
    E = opening width rotating range

  • Slido D-Fold21 50A

    for corner and centre suspension, bottom: with floor guide for corner and centre suspension

  • Slido D-Fold21 50A

    for corner and centre suspension, bottom: with optional floor spring in bottom track

  • Slido D-Fold21 50A

    for corner and centre suspension, bottom: pivot bearing in bottom track

  • Slido D-Fold21 50A

    Bottom pivot bearing, recessed, without floor guide (for centre suspension)

  • Slido D-Fold21 50A

    Optional: angled pivot bearing for integrated wall mounting (only for centre suspension)

  • Slido D-Fold21 50A

    Bottom pivot bearing, recessed, without floor guide

  • Slido D-Fold21 50A / 50B

    Bottom pivot bearing in bottom track

  • Slido D-Fold21 50B

    for corner and centre suspension, bottom: with floor guide for corner and centre suspension

    see key

    H = internal height
    G = door height

  • Slido D-Fold21 50B

    for corner and centre suspension, bottom: with optional floor lock in floor socket (possible in bottom track as an option)

    see key

    H = internal height
    G = door height

  • Slido D-Fold21 50B

    for corner and centre suspension, bottom: pivot bearing in bottom track

    see key

    H = internal height
    G = door height

  • Slido D-Fold21 50B

    Bottom pivot bearing, recessed, without bottom track

  • Slido D-Fold21 50B

    Optional: Angle pivot bearing for integrated wall mounting (F-Fold21 50A: Only for centre suspension)

  • Slido D-Fold21 50B

    Bottom pivot bearing, recessed, without bottom track

  • Slido D-Fold21 50A - Corner suspension

    K = (C – A – D – D – D – A) / 4

    see key

    A = wall distance between wall and door edge
    C = total system width
    D = gap dimension 4 mm (with seal) or 0.5 mm (without seal)
    K = door width

  • Slido D-Fold21 50A - Corner suspension

    K = (C – A – D – D – A) / 3

    see key

    A = wall distance between wall and door edge
    C = total system width
    D = gap dimension 4 mm (with seal) or 0.5 mm (without seal)
    K = door width

  • Slido D-Fold21 50A - Centre suspension

    K = (C – A – 45 – D – D – D – A) / 3.5

    see key

    A = wall distance between wall and door edge
    C = total system width
    D = gap dimension 4 mm (with seal) or 0.5 mm (without seal)
    K = door width

  • Slido D-Fold21 50A - Centre suspension

    K = (C – A – 45 – D – D – D – D – A) / 4.5

    see key

    A = wall distance between wall and door edge
    C = total system width
    D = gap dimension 4 mm (with seal) or 0.5 mm (without seal)
    K = door width

  • Slido D-Fold21 50B - Corner suspension

    K = (C – A – D – D – D – A) / 4

    see key

    A = wall distance between wall and door edge
    C = total system width
    D = gap dimension 4 mm (with seal)
    K = door width

  • Slido D-Fold21 50B - Corner suspension

    K = (C – A – D – D – D – A) / 4

    see key

    A = wall distance between wall and door edge
    C = total system width
    D = gap dimension 4 mm (with seal)
    K = door width

  • Slido D-Fold21 50B - Centre suspension

    K = (C – A – 45 – D – D – D – A) / 3.5

    see key

    A = wall distance between wall and door edge
    C = total system width
    D = gap dimension 4 mm (with seal)
    K = door width

  • Slido D-Fold21 50B - Centre suspension

    K = (C – A – 45 – D – D – D – D – A) / 4.5

    see key

    A = wall distance between wall and door edge
    C = total system width
    D = gap dimension 4 mm (with seal)
    K = door width

  • Slido D-Fold21 50A - Corner suspension

    Example of straight wall connection, vertical door edge rounded with radius R

    see key

    A = wall distance between wall and door edge
    B = door thickness
    E = opening width rotating range

  • Slido D-Fold21 50A - Centre suspension

    Example of wall connection with milled profile in the centre

    see key

    A = wall distance between wall and door edge
    B = door thickness
    E = opening width rotating range

  • Slido D-Fold21 50B - Corner suspension

    Example of straight wall connection, vertical door edge rounded with radius R

    see key

    A = wall distance between wall and door edge
    B = door thickness
    E = opening width rotating range

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94042510 product photo

Folding and hinged door fitting, corner and centre suspension, for door weight up to 50 kg, Basic set, with pivot bearing at top and bottom, for systems without bottom track

Art. no. 940.42.510

Art. no. 940.42.510
selected
Article details

One fitting for a wide range of applications
For more freedom of movement per square metre
For corner and centre suspension
Space-saving 1.5 doors version up to a maximum folding element width of 1200 mm
Running track integrated into lintel or screwed on
With door hinge (model 50A) or butt hinge (model 50B)

  • Internal opening width: Single-sided system 4 m, Double-sided system 8 m

Area of application

For systems without bottom track (for systems with corner suspension with max. 2 doors on both sides)

Set

Set without tracks

Set type

Basic set

Suspension

Corner suspension, Centre suspension

Version

With top pivot bearing and point bearing with adjustable sleeve at bottom

For door material

Wood

Number of door wings in a system max.

6

Note on number of doors per system max.

5.5 (centre suspension) or 6 (corner suspension) per side

For door height

≤2,500 mm

For door thickness

35 – 45 mm

For door width

350 – 650 mm

Note on door width

For the 1.5-door variant, the folding element width is ≤1200 mm at ≤80 kg weight, the revolving door width is ≤800 mm

Internal opening width, 1 side

4.00 m

Internal opening width, 2 side

8.00 m

Mounting type

Ceiling installation, Integrated ceiling installation

Adjustment facility

Height adjustment: -2 – 2 mm

Version

With pivot bearing at top and point bearing with adjustable sleeve at bottom.

Installation

Suspension with integrated support flange

Installation note

The lock must be loosened on site by means of the flush bolt towards the running or guide track.

Order reference

Please refer to the installation instructions for the milling depth of the butt hinges.
Order the mounting tool for the top support flange separately.
Door alignment magnets are milled into the vertical door edge and are mandatory for door alignment.
Further machining dimensions and details can be found in the installation instructions.
Running tracks, guide tracks, hinges and accessories to be ordered separately.

Supplied with

1 running gear, with support flange
2 pivot bearings (1 each top/bottom)

Additional information attributes

Please see installation instructions for exact calculation of door width and required door preparation details.
The number of butt hinges depends on the door height.
With the corner suspension variant with butt hinge, systems must generally be planned with a bottom guide
track. Exceptions are systems with max. 2 door leaves on both sides, which can also be designed without a
bottom guide track.
For the centre suspension variant, there is the option of using a bottom track or not.
In the variant without a bottom guide track, we recommend setting the gap dimension between the floor and the lower edge the door to 68 mm, since the pair of doors could otherwise come into contact with the floor because of the slightly swinging folding movement if the gap dimension is too small.
The wall connection profile must be slightly milled out in the centre or the vertical door edge must be rounded off towards the wall connection with the corresponding radius.
Other wall connection variants can be found in the installation instructions.
In the open position, the folding package parks parallel or slightly inclined/V-shaped depending on the door thickness as well as the number of door leaves.
The vertical gap dimensions between the door leaves are fixed at 4 mm and are closed with the DS 9608 rebate seal.

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Corporate Office: Häfele America Co., 3901 Cheyenne Drive, Archdale, N.C. 27263
Phone: 800.423.3531, Fax: 800.325.6197, Local Phone: 336.434.2322, Email: info@haefeleamericas.com
25-Jun-2025