Cortizo · concealed-sash aluminium

Cortizo COR 70 HO

COR 70 HO windows stand out for slim, strong profiles with an excellent glass-to-frame ratio: glazing can account for up to 85% of the window area.

The sash is concealed — seen from outside, an opening light is virtually indistinguishable from a fixed pane, giving the facade a continuous read.

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Technical sections

Three junctions of the system to scale: side frame, head and sill, and central mullion.

Side section of the Cortizo COR 70 HO — **Side section**A 70 mm frame with a concealed sash: from outside only the frame is visible, with glazing up to 31 mm.

Head and sill section of the Cortizo COR 70 HO — **Head and sill section**Head and sill of the same 70 mm frame with the concealed sash.

Central section of the Cortizo COR 70 HO — **Central section**Central meeting of two concealed sashes, fully dimensioned.

Technical characteristics

Reference figures for the system, measured in the laboratory and confirmed in our own production.

70depth [mm]

46glazing unit up to [mm]

35thermal break [mm]

85% glazed area

3,5maximum sash height [m]

1,0Uw · window 1000×2200 mm*

* Uw for the 1000 × 2200 mm reference window with Ug = 0.6 glazing, HI+ version. The system has 2 sealing gaskets, 3 chambers and powder coating in any RAL colour.

Concealed sash

Seen from outside, the window is almost indistinguishable from a fixed pane: the facade reads as one continuous plane, without the usual visual break between fixed and opening sections.

Desenho e ferragens

A recessed central or side handle, all but invisible head-on, and concealed hinges. Three types of moving mullion; with reinforced hardware the sash reaches 3,5 m in height.

Applications and finishes

Contemporary houses and tall openings where the joinery should disappear. Powder coating across the full RAL range with Qualicoat certification, plus textured, dual-colour and wood-effect finishes.