# Cavity Units – Evolution Steel (Aspire) 2040×620/720/770/820

Source: https://www.timberdoorsdirect.com.au/door/cavity-units-evolution-steel-aspire-2040x620-720-770-820/

■ Cavity Units are recommended for 35mm doors only.

 

FEATURES:

 

- - Smooth 4 Wheel Ball Bearing Carriages
    - Jump free U track – Smooth operation
    - Quick release mechanism
    - Maximum door mass 70kg
    - Same architrave height as a hinged door
    - Tough Composite Split Jambs
    - Galvanised steel back posts slats & track – Termite resistant