Triline Internal Doors

Triline supplies a range of quality flush wood panel doors for the discerning customer.

Our range of internal doors is suitable for both residential and commercial applications.

Ideally suited for use in conjunction with the Triline range of cavity sliders, our wooden internal doors can be manufactured with appropriate rebates for Triline sliding door hardware as required. The Triline door range is equally suitable for hinged door applications.

Internal Door Options

Triline offers a range of interior timber door options that come in a variety of materials, sizes and finishes. We make sure each of them is manufactured to high industry standards, for the client’s satisfaction. Our collection includes:

Triline Semi-solid Doors

Semi-solid core doors have a hoop pine internal frame with 2 or 3 vertical slats and raw or primed MDF skins.

Triline Solid Doors

Solid core doors have a hoop pine internal frame with particle board core and raw or primed MDF skins.

Triline Kitform Doors

In the changing world of design, large doors are often utilized to enable multiple use of space or to open areas up to general use. The Kitform door has been designed to fulfil this demand and allows us to supply oversized doors up to 3600mm wide. These doors are made up of separate panels which are then joined together onsite.


  • Solid timber edge strips for added protection
  • Paint grade or raw finish construction available on request
  • RHS inserts for added rigidity to minimise twist or bow in doors


  • Internal use
  • Residential
  • Commercial
  • Hinged door 
  • Sliding door

Detail Options:

  • Glazed or unglazed vision panels
  • Cut-outs for vents
  • Metal clad doors
  • Timber and glass joinery doors
  • Internal steel stiffeners for over size doors

You can find the wooden interior door for your property in Triline’s collection. For more details and inquiries, please click on the links below.

Custom Size Interior Doors

We manufacture custom sized interior doors suitable for residential and commercial applications. Always focusing on attention to detail and customer satisfaction, our primary goal is to meet and even exceed your expectations.

Special sizes, other individual components and accessories please contact us.