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Improved performance

The cavity unit has evolved

  • Effortless operation
  • Soft closing technology
  • One touch to release door
  • Holds door flush in cavity
The Evolution Complete is the perfect flush cavity sliding door system. Hume Doors have designed the Evolution Complete to incorporate our one touch release and soft closing technology, allowing for the most effortless operation of any sliding door system. The one touch release is magnetised and will hold your door firmly inside the cavity. With one easy touch the spring-loaded system will release the door, sliding with ease across the opening while the soft closer will gently slow and close the door.
Evolution Complete Cavity Uniy - One Touch Release
Evolution Complete Cavity Uniy - Soft Closing

Cavity Units

Evolution Complete Cavity Unit is recommended for 35 mm doors only.


Evolution Timber Cavity

Evolution Timber
Evolution Timber Complete

Evolution Timber Complete
Evolution Steel Cavity

Evolution Steel Cavity (Aspire)
Evolution Steel Complete

Evolution Steel Complete (Aspire)
Available in plain or H3 treated pine  
Same architrave height as a hinged door  
Smooth 4 Wheel Ball Bearing Carriages
Jump free U track – Smooth operation
Maximum door mass 70kg
Quick release mechanism
One Touch Release System    
Soft Closer Technology    
Tough Composite Split Jambs    
Galvanised steel back posts slats & track – Termite resistant    

Evolution Timber Cavity Unit Opening Sizes

Evolution Timber Cavity Unit Opening Sizes
A = Door height + 80 mm

Flush Pull opening width:

B = 2 x Door + 10 mm (Flush pull* the door protrudes 50mm)

Flush Jamb opening width:

B = 2 x Door + 60 mm (Flush jamb the door is flush with split jamb)

How to Install A Cavity Unit

Cavity Unit Standard Size (mm) Stud Thickness (mm)
Evolution Timber Complete 2040 x 620/720/770/820/870/920 70/75/90/100
2340 x 620/720/770/820/870/920 70/75/90/100
Special sizes up to 2340×919 90/100
Special sizes up to 2400×1200 90/100

Evolution Premium

Floor to ceiling zero clearance Cavity Unit

  • Creates large open living spaces
  • Impressive large door openings
  • Virtually invisible – hidden track system
  • Soft closer – prevents door slamming
  • One touch operation – push to release door
Important Information For Premium Cavity Unit
Maximum Door Size 3000 x 1300 mm
Maximum Door Weight 100 kg
Maximum Door Size 3000 x 1300 mm
Stud Thickness 90 mm
Soft Closer Included as standard
Overall Unit Height Floor level (slab/sheet) to underside
of ceiling + 50 mm
Overall Unit Width Door Width x 2 + 50 mm
Door Height Calculation Finished floor to underside of ceiling
less 15 mm for clearances
Clearances Under Door = 10 mm
Above Door = 5 mm (Standard)
*Can be adjusted to minimum 3 mm

Cavity Units Additional Extras

  • Soft Closer
  • Evolution Touch
  • Closing Jamb
  • Cavity Track Door Stop for doubles (Evolution Timber)
  • Cavity Guide (Evolution Timber)
  • Staingrade upgrade
  • Timber Pelmet to suit double Cavity Unit

Add On Options For Evolution Timber

Soft Closer

(Available separately)
Soft Closer

Cavity Track Door Stop

(For double cavity application)
Cavity Track Door Stop

One Touch Release

(Available separately)
One Touch Release


Additional information

Custom/Special Size (mm)

Custom sizes are available on request
Special sizes up to 2340 x 919 x 90/100
Special sizes up to 2400 x 1200 x 90/100
Evolution Premium is a fully customised to Maximum Door Size 3000 x 1300 x 90