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COR 70 Hidden Sash - aluminium and PVC windows Cortizo
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COR 70 Hidden Sash

It is not a painting, it is a window. This is how COR 70 Hidden Sash can be described: like the 80 mm version, it has a visible section of only 66 mm and allows the ARCH INVISIBLE handle to be incorporated, while the hinges and drainage solution can also be concealed. In this way, any element that could disrupt the visual harmony of the whole is removed.

Features System technical information System gallery
Features

70 mm aluminium hinged system with concealed sash | Cortizo aluminium and PVC windows for homes

COR 70 Hidden Sash offers a clean, minimalist aesthetic by hiding the sash behind the frame, maintaining a very reduced visible section and a high entry of natural light. It is a suitable solution for residential projects seeking a balance between design, performance and construction simplicity.

Thermal transmittanceUw ≥ 0.84 W/m²K
Acoustic insulationRw up to 46 dB
Air permeabilityClass 4
Water tightnessClass E1800
Wind resistanceClass C5
PAS24 security testSuitable
AEV reference test 1.23 x 1.48 m / 1 sash. Security test: reference test 1.100 x 2.400 m / 1 sash. DTA certification by CSTB laboratory.
System technical information

System technical information

Main data

SectionsFrame 70 mm · Sash 70 mm
Polyamide strip length35 mm
Profile thicknessWindow 1.9 mm
GlazingMax. 40 mm · Min. 26 mm
Max. sash dimensionsStandard solution: width 1300 mm · height 2400 mm · HD hardware for side-hung opening: width 1200 mm · height 3500 mm
Max. sash weight160 kg
NoteCheck maximum weight and dimensions according to typology

Options

Security hardware - aluminium and PVC windows CortizoSecurity hardware
Concealed hardware - aluminium and PVC windows CortizoConcealed hardware
Concealed handle - aluminium and PVC windows CortizoConcealed handle
Concealed drainage - aluminium and PVC windows CortizoConcealed drainage

Opening options

COR 70 Hidden Sash opening options - aluminium and PVC windows Cortizo
Inward opening: side-hung, tilt & turn, bottom-hung and parallel sliding.
System gallery

System gallery

Images prepared to show the concealed-sash design, the system sections, its opening options and its integration into residential projects.

COR 70 Hidden Sash on facade - aluminium and PVC windows Cortizo
COR 70 Hidden Sash detail - aluminium and PVC windows Cortizo COR 70 Hidden Sash technical section - aluminium and PVC windows Cortizo COR 70 Hidden Sash interior - aluminium and PVC windows Cortizo

Compare this system with what you need to improve

Before choosing a window, it helps to relate the system to the real use of the home: thermal insulation, outside noise, air leakage, watertightness, orientation and opening type.

Compare performance Thermal insulation Solutions by need

Would you like to assess COR 70 Hidden Sash for your home?

Request a quote and we will help you analyse whether this system meets your needs for design, insulation, natural light and comfort.

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