A70US - Aluminum windows

Hidden Casement system

Thermal insulation Uf

> 1,35 W/(m2K)

Air tightness window

class 4


< class E1200

Wind tightness

< class C5

The windows made in A70US system have casements that are unseen from the exterior side of the building. The position of the adjacent fixed and openable windows cannot be distinguished. In the row of adjacent fixed and openable windows all the compartments looks the same. The width of window frames is small, what makes the structure look slender and light.

Similarly to the standard solution, the A70 windows have the effective water drainage and ventilation system from the glass chamber and from the chamber between the casement and the frame. The ventilation and drainage holes are covered from the outside with caps made of plastics.

The characteristic feature of the A70US window system is that it is closely connected with the other A systems. Adapting such a structural design allowed achieving and applying many common elements, e.g. common glazing beads, gaskets, hardware, etc.

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  • Key features
  • Technical Specifications
  • Performance
  • Windows available as fixed or open in, tilt and turn, tilt and slide
  • 1 or 2 leaf doors open in or open out
  • Safety locking
  • Steel look like industrial options
  • Large size door constructions available
  • Hidden sash option
  • Secure windows and door options, providing burglar resistance
  • Multitude of finish options
  • Dual color options
  • Glazing up to 60 mm
  • Multi-point locking
  • Eurogroove that broadens the choice of hardware available
  • Suites with other A systems allowing total design flexibility and project solutions
  • Compliance with CE marking requirements


Depth of frame2.75"
Depth of leaf3 3/8
Glazing rangeframe: up to 2 5/16
sash: up to 2 11/16

Size & Weight Limitations

Maximum size (H×W)H to 82  2/3 W to 55 1/8
Max weight lbs286
AAMA/WDMA/CSA 101/I.S.2/A440-11 Design Pressure Class AW-PG 60 +/- 60.15 psf (2,880Pa)
Air Infiltration / Canadian Air 0.02cfm/ft2 - Prior to and After Cycles and Design Load / A3 Level
Water Penetration Resistance Test Pressure 15.04 psf (720Pa) - Before Thermal Cycles and after Design Load
Uniform Load Structural Test Pressure +/- 90.23 psf (4,320Pa)


We offer high variety of Aluminum windows and doors. Every order is custom made according to our customers requirements. Our modern construction solutions make it possible to create extremely large g lazed areas and improve building design and interior décor not available with most of our competitors, for example 25’ W x 9’H lift and slide doors. We have almost an unlimited potential in terms of both colors and their different shades for our aluminium components. Another key benefit for our products are the components utilizing multi point locking. This is achieved through a link gear running around the window sash, which operates pins which in turn lock into keepers located around the perimeter of the sash opening. Depending on the size of sash used, there can be up to twelve locking points on any one sash. In doors a six-point lock is used. This comprises of four compression roller pins, one latch and one dead bolt. All the locks on any one sash are operated by one lever and secured by one key. Further this creates insulating advantage as an even sash seal is achieved as well as enhanced security. Pleae note we can perform the installation or assit our customer in an installation consult capacity.


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Eco Windows USA provides top quality window and door solutions in Brass, Steel, Aluminum, Wood and PVC. With a capacity of producing over 5000 windows per day our systems are highly customizable, allowing for almost unlimited possibilities to arrange elevations and building interiors for both residential and commercial use. Our brand of window and door carpentry is produced by combining precisely selected materials, premium German hardware, latest technologies and long-term experience in production. We provide CAD design support as well as complete installation services.