The uncompromising cavity slider — full height, standard, or anything in between
Zero Clearance™ is a premium architectural cavity sliding door system designed for full-height, oversized and heavy internal doors.
The hanger hardware is recessed into the top of the door, allowing the panel to sit exceptionally close to the concealed head track. A precision bottom guide is also rebated into the door, keeping the operating components out of sight at both the top and bottom.
The result is a clean, floor-to-ceiling opening with minimal visual interruption—ideal for contemporary architecture where the doorway is intended to feel like part of the wall.
While it’s the natural choice for full-height, floor-to-ceiling openings up to 3000mm, it’s just as suited to standard-height doors, doors sitting under a bulkhead, or any shorter opening — anywhere the brief calls for the best possible finish, not just the biggest door. It’s the specification for projects where quality of finish is the priority and budget isn’t the limiting factor.
Standard cavity sliders are built around visible pelmets and hardware clearances that work fine for a typical internal door — but they compromise the minimal look architects are increasingly asked to deliver, and many lightweight systems simply aren’t rated to carry a heavier door safely, whatever its height.
Zero Clearance™ 120kg addresses both:
- True concealment, even on a heavier door — 5mm clearance at the head, with no visible hardware, holds up structurally at 120kg where lighter-duty systems can’t.
- Not limited to full height — rated up to 3000 x 3000mm for feature floor-to-ceiling openings, but equally suited to standard-height doors or doors sitting under a bulkhead, wherever the minimal look is wanted without a full-height opening.
- Concealed at the floor too — a precision bearing bottom roller guide is fully hidden in the door’s bottom edge, so the Zero Clearance™ look isn’t just at the head — it runs floor to ceiling.
- Built for wall tiling — engineered to carry floor-to-ceiling tiles where that’s part of the design, without extra structural workarounds.
| Architects & Designers | Specify a genuinely invisible sliding door detail — full height, standard, or under a bulkhead — including heavier doors and tiled walls, without the hardware compromising the line. |
| Builders | A proven, structurally rated system for heavier doors of any height, with standard door prep and clear wall-framing requirements to plan around. |
| Homeowners & End Users | The highest-quality cavity slider in the range — a solid, substantial door with no visible track or hardware, for projects where finish comes first. |
How it works with modern architecture
Modern architecture increasingly treats internal walls as continuous, unbroken planes — doors that read as part of the wall when closed, and disappear into a cavity when open. That effect depends entirely on how little hardware is visible, and how well the system carries the actual weight of the door being specified — regardless of whether that door runs floor-to-ceiling or sits under a bulkhead.
Zero Clearance™ cavity system is built for the heavier, more substantial door leaves that this kind of architecture often calls for — solid-core doors, tiled or clad panels, full-height or standard openings — while holding the same 5mm concealed clearance throughout the range. Where ProLine60™ is the cost-effective way to bring that same minimal look to standard-sized, lighter doors, Zero Clearance™ 120kg is the specification of choice when the brief is simply the best possible result, on doors of any height, and budget isn’t the deciding factor.
- Full-height, floor-to-ceiling feature openings in living areas, entries and open-plan spaces
- Standard-height doors or doors sitting under a bulkhead, where the minimal look matters as much as it does on a full-height opening
- Heavier door leaves — solid core, veneer, or joinery panels — that exceed lighter-duty cavity systems
- Premium residential, commercial office and retail fit-outs where quality of finish is the priority and budget isn’t the constraint
- Single, double, telescopic or corner meeting applications
Max door weight: 120kg, 200kg, 400kg Max door height: 3000mm Max door width: 3000mm Min door thickness: 32mm
Door clearances:
- Above door: 5mm ± 2mm
- Below door: 10mm ± 2mm
Wall framing (minimum):
- Units up to 2100 x 920mm: 70mm
- Units up to 2100 x 920mm: 90mm
- Units bigger than 2100 x 920mm: 96mm or 100mm
- Units bigger than 2150 x 1500mm: 96mm or 100mm+
Configurations available:
- Single cavity sliding door
- Double cavity sliding doors
- Double corner meeting sliding doors
- Telescopic: double, triple and quad overtaking
Track finish: White Powder coated Aluminium (120kg track)
Optional accessories:
- Soft Close (available for doors up to 120kg)
- Damper Door Stop (available for doors up to 200-400kg)
- Pocket door release (doors up to 75kg)
Things to consider or keep in mind with Zero Clearance fittings:
- When buying an off the shelf door, ensure it has big enough top & bottom rails inside the door construction itself. This is because rebates need to be cut out of the top & bottom of the door for the hanger hardware and bottom guide. For peace of mind, ask us to supply the door also.
- 5mm clearance between track and top of door — no visible hanger plates or screws
- Precision bearing bottom roller guide, fully concealed in the door’s bottom edge
- Rated for doors up to 120kg, 200kg or 400kg and up to 3000 x 3000mm
- Engineered to carry floor-to-ceiling wall tiling up to 2400H ceiling
- Doors panels can be supplied pre-rebated for hardware, saving installation time on site
- Complements standard-sized ProLine60™ units for a consistent look across a dwelling
Call up Zero Clearance™ 120kg on drawings or door schedules using the details below. Wall framing requirements vary depending on overall door size.
Specification checklist:
- Door leaf size: width × height (max 3000 x 3000mm)
- Door weight: confirm ≤ 120kg, 200kg, 400kg
- Configuration: single / double / double corner meeting / telescopic (double, triple, quad overtaking)
- Jamb finish: select from Cavity Jamb Options
- Wall Makeup: stud size / lining thickness
- Tiled wall application: yes/no
- Accessory: Soft Close (yes/no), Pocket Door Spring Release (yes/no)
Reference the Stud Opening Prep and Architectural Cavity Sliders documents for rough opening tolerances.
All Triline cavity sliders up to 2400 x 1200mm are certified to carry floor-to-ceiling tiles per the Prototype Test requirements of AS 1720 (Timber Structures — Design Methods).
Triline is a certified member of the Responsible Wood program (PEFC Chain of Custody).
