Architectural Vision Systems
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ARCHITECTURAL VISION SYSTEMS

COR 70 / COR 80 Hidden Sash

Hidden opening sashes. Clean outside lines. Tilt for air, turn to open.
COR 70 hidden-sash demonstration.

Features

  • 66 mm · Outside sightline
  • 70 / 80 mm · Frame depths
  • Tilt & turn · Inward opening
  • Double or triple · Glazing options
  • Concealed · Hinge options
  • Dual colour · Finish options

Choose the frame and glazing to suit the opening. Hardware, maximum sizes and performance depend on the selected system and configuration.

01

Why COR 70 / COR 80 Hidden Sash

The opening sash sits behind the frame, keeping the outside view as clean as a fixed window.
Tilt the sash for ventilation or turn it fully inwards for access to the outside glass.
Choose the 70 mm COR 70 frame or the deeper 80 mm COR 80 frame. Each window is drawn to your opening before manufacture.
Request COR 70 / COR 80 Hidden Sash drawingsCOR 70 Hidden Sash technical brochureCOR 80 Hidden Sash — manufacturer technical information
02

Optional features

COR 70 Hidden Sash

70 mm frame depth, with glazing up to 40 mm depending on the selected specification.

COR 80 Hidden Sash

80 mm frame depth and a 45 mm thermal break, with triple-glazing configurations available.

Concealed hardware

Concealed hinges and handle options keep the inside view simple.

Concealed drainage

A discreet alternative to visible drainage caps.

Cills and head extensions

A choice of cill depths, with head extensions for concealed trickle vents.

Finishes

Choose a RAL colour, with different colours inside and outside available.

EXPLORE THE DETAILS

C70 and C80 in 3d

COR 70 Hidden Sash

COR 70 · Base with 180 mm cillCOR 70 · Base with 180 mm cillOpen 360 view ↗COR 70 · Head without add-onCOR 70 · Head without add-onOpen 360 view ↗COR 70 · Head with 20 mm add-onCOR 70 · Head with 20 mm add-onOpen 360 view ↗

COR 80 Hidden Sash

COR 80 · Base without cillCOR 80 · Base without cillOpen 360 view ↗COR 80 · Base with 180 mm cillCOR 80 · Base with 180 mm cillOpen 360 view ↗COR 80 · Head without add-onCOR 80 · Head without add-onOpen 360 view ↗COR 80 · Head with 30 mm add-onCOR 80 · Head with 30 mm add-onOpen 360 view ↗