Offset fold-up door

Offset fold-up door

This door is suited for applications where a minimum internal door projection is required. it can be used for light commercial and light industrial buildings, e.g. small workshops, small loading bays etc.

Door Operation

The fold-up door is a twin leaf, hinged horizontally between the off-set leaves which are balanced with counterweights which are in constant suspension. The movement of the leave is controlled by guide rollers operating in vertical guide channels with connecting hinge to the top leaf of the door.


The door is available to a maximum height of 3,600mm by 6,000mm wide. Due to its construction, this door is not recommended for high wind area.

Cladding (Steel)

Door can be clad with various sheeting materials and profiles. It is recommended wherever possible to use standard cladding profiles which are commonly used e.g. (should replacement be required in the future) zinc-alume and colourbond finishes are available in hexline as a manufacturing standard. Should profiles be specified, please consult manufacturer on availability and delivery.

Glass Panels

Door can be either partly or fully glazed to provide light, give inspection windows or full showroom and retail display. Standard glazing of door is 6.32 laminated safety glass set in high security aluminium double section glazing beads fixed to tubular frame. Glazing of doors are to Australian Standards and Specifications AS1268 PART 1-3, 1979.

Heavier grades or ornamental glass should not be specified before consulting the manufacturer due to additional weight, deflection and door design involved. Fully glazed doors are fitted with a steel kick plate having a minimum height of 200mm as standard and increasing in height as a structural ember to avoid deflection in the closed position in accordance with door width.

Bar Grille

The Bar Grille will be constructed using 20mm square rolled hollow steel section tube welded to the door frame face vertically over the entire area at approximately 120mm spacings. The door will be prime coated using zinc chromate primer (or otherwise specified).

Mesh (Steel, Aluminium)

Mesh door will be constructed using 50mm square steel weld mesh as standard (or otherwise specified).

Other Finishes

Other finishes that are available are plywood, woven wire, perforated sheet metal, alumply and flat galvanised sheet etc.

Door Frame

Door frame is constructed using rolled hollow section steel tube members, braced and trussed as required and designed in accordance with the Australian Standards to withstand wind loading in the closed position and provide minimum deflection in the open position.


Frame, guide channels and fittings to be given one coat of zinc rich chromate primer (or otherwise specified).


Door will be fitted with pad bolts internally - one fitted to each side as standard unless specified. (Padlocks by others). If motorisation is required we recommend not to use pad bolts due to self locking by the motor.

Counterweight Covers

The counterweight will be fully enclosed and protected using a heavy gauge pressed steel cover to suit dimensions found and will be at a length of two-thirds of the door height as standard and fixed to the guide channel and wall on all industrial installations only.

Escape & Access Doors

Escape and access doors may be incorporated in full or selected heights providing the
Escape and access doors are fitted with a standard locking using Lockwood 201 night
The door may be opened inwards or outwards where specified.


Operation is by a heavy duty ramp and cam drive system driven by a continuous rated 3 phase 415 volt or single phase 240 volt motor (single phase optional only). The door will operate at 9 meters per minute. Remote control an optional extra.

This type of door is one which operates within the doorway opening and certain requirements must be met.

(a) The opening has to be true and plumb.
(b) There must be sufficient head room above the lintel for pulley assemblies and internal arch of door.
(c) There must be sufficient side room on inside of opening for the counter weight.
(d) There must be no obstructions inside or outside that would inhibit the doors travel.