Triple Track Sliding Doors
Three sliding panels, two-thirds open — the bi-fold alternative
The best of both worlds: bi-fold-sized openings with sliding-door glass. On a Smart Systems triple track, three big panels each run on their own track — so you can slide two-thirds of the wall open, with no fold-back stack and no swing space.
Built on the same Visoglide Plus platform as our two-pane sliders, the triple track carries panels up to 250kg each and spans openings well beyond what a two-track door can, with PAS 24:2022 security and a polyamide thermal break throughout.
Why choose Triple Track Sliding Doors
- Three independent tracks — open up to two-thirds of the aperture
- Bigger clear openings than a standard two-track slider
- No fold-back stack — panels park neatly behind each other
- Huge panes: up to 2.5m tall, 250kg per sash
- PAS 24:2022 security, BSI Kitemarked
- 200+ RAL colours, dual colour and Sensations finishes
Engineered for performance
- Visoglide Plus platform with triple track outer frame
- XXX, OXO, XXO and OXX configurations
- Slim 83mm interlock option
- Polyamide thermal break — U-value from 1.1 W/m²K
- 38mm double or triple glazed units
- Lift & slide option for even smoother movement
- Wide spans achievable — ideal for large extensions
Options
Choose the finishes and options to suit your home.
Available finishes
Choose your style
- 3-pane, all sliding (XXX)
- 3-pane, fixed centre (OXO)
- 3-pane, one fixed end (XXO / OXX)
- Lift & slide option
Glass options
- 38mm A-rated double glazed units
- 38mm triple glazing
- Solar-control glass for big south-facing spans
- Acoustic laminated glass
Furniture & hardware
- Multi-point locking system
- PAS 24:2022 tested hardware
- Colour-matched handles
- Lift & slide gear option
The same thermally broken profile as Visoglide Plus: 1.4 W/m²K with standard glazing, 1.1 W/m²K with high-performance units — a wall of glass that still meets Building Regulations comfortably.
Engineered to protect
PAS 24:2022 tested with multi-point locking and BSI Kitemark certification — with the inherent strength of aluminium and interlocking panels that resist lifting and levering.
Tailored to you
Pick your configuration (all-sliding or fixed-pane), colours inside and out from 200+ RAL shades and Sensations textures, threshold detail and glass specification. We'll advise on the best layout for your opening at the survey.
Who this suits
Large extension openings — typically 4 to 6 metres — where you want a truly open wall in summer but prefer sliding glass to a folding stack. Increasingly our most-requested option for big projects across the region.
How we do it
Triple-track doors are heavy, precision products; our own team handles the structural survey, installation, levelling and fine adjustment, typically over one to two days.
Frequently asked
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Triple Track Sliding Doors — up close
More Aluminium
Need triple track sliding doors? Let's talk.
Made in Grimsby, fitted across North East Lincolnshire — get a fast, free, no-obligation quote.