C80US - Aluminum windows

Hidden sash window system

Thermal insulation Uf
from 0,8 W/(m2K)
Air tightness window
class 4
class E 1950
Wind tightness
class C5
  • A 3.14in frame depth Euro-Groove hidden sash window system
  • Seen surface of only 2.6in from the outside
  • Uw from 0,8 (W/m²K)
  • Extraordinary increase in luminosity
  • Possibility of incorporating hardware with concealed hinges & the security system Evo Security
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» Maximum glazing thickness


» Opening possibilities

Open inwards:

Side hung, turn & tilt & bottom hung .


Depth of frame 
Depth of leaf 
Glazing rangeframe: up to 3.14 in
sash: up to 3.14 in

Size & Weight Limitations

Maximum size (H×W)H to 94.5 W to 51
Max weight lbs352
Air Permeability
(EN 12207): CLASS 4
(EN 12208): CLASS E1950
Wind load resistance
(EN 12210): CLASS C5
Thermal insulation (Uf)
from 0,8 (W/m²K)
Maximum acoustic insulation
Rw=46 dB

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