Fully internal counter-balanced door

Fully internal counter-balanced door

This is most suited for carpark entries, workshops, small loading bays etc. where projection of the door cannot protrude past the building line, or where the door is to provide full clear opening height. The door will be a counterweight balance, single leaf door lifting vertically up into a horizontal position behind the lintel, without projecting past the exterior building line.


The internal glide-up door is a single leaf door, balanced with counterweights which are in constant suspension. The movement of the door is controlled by guide rollers in the horizontal and vertical guide channels.



The internal lift up door, is available in manual operation to a height of 2700mm by 7000mm wide. Not suitable for high wind areas or should be motorised. Motorisation is available up to a size of 3000mm high by 20000mm wide. For sizes over these dimensions, please consult the manufacturer.

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 AS1288 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 structure ember to avoid deflection in the closed position in accordance with door width.


Aluminium Shopfront Faced Glass or Aluminium Panelled

The doorframe's external face will be capped using aluminium glazed hat section to provide a shopfront faced finish. The door will be divided into window panels to meet door and architectural designs and to comply with Australian Standards. The panels may be infilled with glass (see glazed doors) or flat 2.5mm aluminium sheet. The aluminium will be finished in clear anodised as standard. Other colours are available where specified.

Bar Grille

The Bar Grille will be constructed using 25mm 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 finished 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).


Manual doors will be fitted with "T" handle locking at approximately 1400mm high connected to solid steel locking bars. The "T" handle locking key operated from outside only. Doors can be fitted with pad bolts internally, one fitted to each side. When door is motorised we recommend not to use locking due to self locking by 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 and open inwards or outwards as specified and locked using a Lockwood 201 Night Latch as standard.

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