Dorma Variflex
NBS Spec

Project Details

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Manufacturer & product

Dorma Variflex 100 Movable Wall

Method of operation


Movable wall comprising individual top hung, full height panels of equal size, made to measure to suit site dimensions. When wall is closed between fixed abutments it gives the appearance of a solid flush wall, with concealed interlocking concave and convex extruded aluminium edge profiles which incorporate integral magnetic strips.


Tri-block panels to be constructed of a non-deflecting steel tube frame complete with independent aluminium edge profiles, panel thickness 100mm. The frame must be clad either side with 16mm 3-ply quality chipboard panels hung in acoustic isolation from the frame and allowed to vibrate independently of the frame. The facing boards must be easily removable without the need to remove the panels from track. Track extruded aluminium, track junctions incorporating drop forged roller bearings. Carriers fully adjustable and secured to panels by horizontal ball bearings engaging with shock absorbing roller pins.

Opening Size



Maximum height for Single Point 3500mm

Number of panels

Maximum panel width 1200mm


Pass doors

Pass door or double pass door panels supported with a surrounding portal frame. The lateral posts incorporating compression to enable positive floor engagement. Post stability shall be reinforced by locking projections that engage in flush-recessed floor sockets. Door leaf provided with a frame and automatically operable sealing strip. Electrically operable sealing components engaging with the ceiling and floor.

Acoustic insulation

Tested to DIN EN ISO 140-3:1995 & DIN EN ISO 717-1:1997. Laboratory test must include automatic seals and tested to the above standard. If the test certificate is in the name other than the supplier then a letter of authenticity (not older than 3 months) must be supplied by the company who tested the product to confirm that the supplier is authorised to use the offered certificate.

Panel weight

Not to exceed 38kg per M2


Product must be supplied with a valid ISO14025 Environmental Product Declaration

Panel & wall post finishes

Fire Classification of Wall Lining: European Standard EN 13501-1 Class B-s2-d0

Optional functional finish

Track finish

Polyester powder coated to RAL 9010

Panel edges

Fixing/void structure

Subject to approval by the structural engineer

Sway bracing required above 500mm.

Acoustic baffle to ceiling to be constructed to maintain the acoustic integrity of the movable wall system.

Project Notes

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