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A 84 Hidden Sash - aluminium and PVC windows Cortizo
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A 84 Hidden Sash

Concealed-sash PVC system with a visible section of only 90 mm, designed for homes that require more glazed area and a minimalist appearance. Its 84 mm, 6-chamber profiles achieve Uw from 0.74 W/m²K with excellent AEV performance.

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Features

A 84 Hidden Sash · Features | Cortizo aluminium and PVC windows for homes

Concealed-sash PVC system with a visible section of only 90 mm, designed for homes that require more glazed area and a minimalist appearance. Its 84 mm, 6-chamber profiles achieve Uw from 0.74 W/m²K with excellent AEV performance.

Thermal transmittanceUw ≥ 0,74 (W/m²K)
Acoustic insulationRw up to 46 dB
Air permeabilityClass 4
WatertightnessClass 2250
Wind resistanceClass C5
AEV reference test 1.23 x 1.48 m / 2 sashes
System data

A 84 Hidden Sash · System data

Sections

Sections Frame 84 mm · Sash 84 mm
Glazing Max. 46.5 mm · Min. 32 mm
Max. sash dimensions Width (W) 400-1400 mm · Height (H) 450-2500 mm
Max. sash weight 130 kg window / balwithy door
Check maximum weight and dimensions according to typology

Possibilities

Security hardware
Concealed hardware
Concealed handle
Concealed drainage
Straight sash. Straight or curved glazing bead.

Opening possibilities

Opening possibilities A 84 Hidden Sash - aluminium and PVC windows Cortizo
Inward opening: Casement, tilt-and-turn and bottom-hung.
Gallery

Gallery A 84 Hidden Sash

A 84 Hidden Sash - aluminium and PVC windows Cortizo
A 84 Hidden Sash - aluminium and PVC windows CortizoA 84 Hidden Sash - aluminium and PVC windows CortizoA 84 Hidden Sash - aluminium and PVC windows Cortizo

A 84 Hidden Sash

Concealed-sash PVC system with a visible section of only 90 mm, designed for homes that require more glazed area and a minimalist appearance. Its 84 mm, 6-chamber profiles achieve Uw from 0.74 W/m²K with excellent AEV performance.

Request a quote

Aluminium and PVC windows: useful guidance for choosing well

Choosing aluminium and PVC windows is not only a matter of price. In every home, orientation, climate, outside noise, opening size, façade design and daily use all influence the final decision. Cortizo Windows brings together solutions designed to improve thermal insulation, acoustic insulation, security, natural light and energy efficiency while preserving the character of each project.

Aluminium stands out for its strength, durability, dimensional stability and design possibilities, especially when large openings, slim profiles or highly customised finishes are required. PVC offers excellent insulating performance, low maintenance and a strong balance between comfort and value for home renovation. In both cases, the right choice should take into account the glazing, opening type, installation quality, orientation and the real needs of the household.

Beyond comparing materials, it is useful to define what needs to be improved: reducing energy loss, gaining more silence, increasing security, simplifying maintenance, renewing the appearance of the home or preparing it for more efficient consumption. The Cortizo Windows retail network helps assess each project, identify the most suitable solution and request a professional quotation for replacing windows with a close, project-focused service, without spam or unrelated calls.