Lietzke Squareline Doors


The Squareline Door is a durable all-purpose metal clad door. It is lightweight and is less likely to deteriorate, warp or bind than a timber door under normal and extreme climate conditions. A Squareline door is comprised of a rigid polystyrene solid core clad with Colorbond steel in standard door thicknesses of 40mm. Timber blocks are fitted into the door to allow fixing of hinges, locks and hardware. The side edges of the door have an interlocking seam providing a rivet free, weather proof and aesthetically pleasing finish. The Squareline Door will either open in or out and is also available with an optional exterior grade marine plywood core. Other options include view panels, air relief grilles or door seals. This door is a cost effective, secure and weather resistant alternative to traditional timber doors.


Medium security applications including internal doors, perimeter doors, transportable buildings, warehouses, garages, sheds, metal clad buildings and high use doorways.


Standard finish is Colorbond steel. Also available is Zincalume, Galvabond, aluminium, stainless steel or with a factory applied durable polyester Powdercoat finish.


Standard Door Size – 2040mm high x 820, 870 and 920mm wide x 40mm
Standard Double Door Size – 2040mm high x 1640mm wide x 40mm
Other Sizes up to 2400mm high x 1075mm wide x 40mm available
Doors above this size can be produced using a varied manufacturing process.

Core Material:
Standard – Rigid Polystyrene
Optional – Exterior marine grade plywood

Standard – Lietzke Heavy Duty complete with nylon brushes
Number of Hinges varies due to door weight or door size

Standard – pre-drilled to accept cylindrical lock with 70mm backset
Most locking devices and hardware can be factory fitted.

Door Weight:
40mm Standard Squareline – 19.00kgs

Suitable Frames for Door and Frame Package

Frames can be customised to suit specific applications. For transportable buildings use flange fit and for Architectural applications use a BW Style frame to suit the required wall thickness.

To Specify

Door shall be a Lietzke Squareline 40mm thick door leaf comprising a solid polystyrene (or exterior grade marine ply)* core clad with Colorbond steel with an interlocking rivet free edge seam pre-hung in a Lietzke Flange Fit Metal Door Frame (or Lietzke BW Metal Door Frame)*. The door units can be pre-fitted with the locks and hardware as specified.

* Nominate when specifying

Technical Drawings: