Care, warranty & FAQs

Lifetime warranty for Cavity Sliding unit

Triline Services warrants that its cavity sliders and sliding door track & fittings are supplied fit for their intended purpose and free of manufacturing defects and material flaws. Should any defect in materials and/or workmanship becomes apparent, the Company will repair or replace the product free of charge, provided the defective product:

  • Was correctly installed and maintained according to the Company’s recommended procedures;
  • Was utilised only for its intended purpose;
  • Was not either deliberately or accidentally misused, abused or neglected;
  • Was not damaged as a result of environmental conditions, natural disasters or other events be-yond the control of the Company.

This warranty does not cover general deterioration in appearance or performance that occurs as a result of normal operation.

The liability of the Company shall be limited to the repair or replacement (at the Company’s option) of the defective product. Triline will not be liable for any other direct or indirect costs, loss or damage to person or property, or any consequential losses.

The Company excludes, to the extent permitted by law, all other warranties, whether expressed, implied or statutory.


Frequently asked questions

Yes, we can make our cavity units to suit oversized doors up to 3000H x 2200W but not limited to this as we have options for doors over this size. We can also make them to suit custom wall thicknesses depending on the composition of the wall. See our Custom Work page for more information.

We wholesale our cavity units through all the hardware stores in Tasmania and various stores in Victoria and Queensland. However, contact us if you are from another state and we can look into delivery for you. See our Stockist page for more information.

No, we manufacture only. We recommend a builder or joiner for site measures, preparing the opening and installation.

No, we supply the pocket, headtrack, running gear, door jambs, bottom guide and doors to suit.

Our wedge guides are visible to the extent that they are screwed to the bottom of the split jambs. We have a T guide option which is a plastic T shaped guide which is placed inside the bottom of the split jambs and is kept out of sight. We also have a roller guide which is mounted in the same position.

From time of order/confirmation we like to allow 3-4 weeks. This depends on the complexity of the order and customisation as custom sized jambs will require special sized timber to be ordered from our supplier. Each job can vary so be sure to contact us regarding your specific order.

Our head track is a one-piece aluminium extrusion, the pocket is constructed from LVL or Hoop Pine rails & rear post, the opening of the pocket has aluminium vertical angles to strengthen the cavity opening. All jambs are made of KDHW or Hoop Pine depending on the availability and requirements.

Yes. Sometimes this can mean that the unit must be made to suit a wider stud size to accommodate thicker doors.

All materials for our cavity units are ordered in set lengths to help reduce wastage. Our units are made up of engineered timber products which is a renewable product that locks carbon in when harvested.

We can manufacture units to suit doors up to 3000mm H x 2200W, however you’re not limited to this as we have options for doors over this size.

We have ranges of fittings to suit 120kg, 180kg, and 350kg door weights. Contact us to find out more.

We believe that attention to detail and exceptional customer satisfaction.  It is our aim to ensure you get the right product that suits your particular needs, both the aesthetic aspect and function.

Our head office and main factory are located in Hobart and we have another factory in South East Queensland.  From these two manufacturing centers, we service the whole of the country, up and down the Eastern Seaboard and across to South Australia and Western Australia.