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ST70 Concealed Sash

ST70 Concealed Sash

APA Facade Systems ST70 Concealed Sash window has a slim design, with a surface of only 2 3/4” from the exterior. The slim profile provides the inside of the building with a substantial increase in luminosity.

ST70 Concealed Sash

ST70 Concealed Sash

Slim Design to Increase Luminosity

A 1 3/8” thermally broken area and the insertion of a polyamide core (ranging from 15/16” to 1 3/4“) in the frame and sash allow it to reach values of up to 0.1761 Btu/ft ² hr °F of transmission, maximizing its energy efficiency.

Acoustically this system has an increased level of sound insulation with the possibility of installing high-performance units of up to 1 9/16“.

ST70 Concealed Sash
St70 Concealed Sash
concealed sash window
Concealed Sash

Opening Possibilities 

In-swing casement / tilt and turn 

The ST70 Concealed Sash has two different opening possibilities. The mechanism used allows it to open as an in-swinging casement and tilt and turn window.

Perfect for Living Space 

ST70 Concealed Sash

The ST70 Concealed Sash is evaluated and tested to AAMA 101 standards for windows and doors, meeting the CW PG50 grade. 

With excellent water tightness, air permeability, wind-resistant values, along with it’s its slim design, this window system is the ideal choice for condominiums, houses or student accommodation.

  • Slim design with a surface of only 2 3/4” from the exterior.
  • 3/8” thermally broken area.
  • Insertion of 15/16” to 1 3/4” polyamide core.
  • Values of up to 0.1761 Btu/ft ² hr °F of transmission.
  • Possibility of fitting 1 9/16” high-performance units.
  • Opening Possibilities: In-swing casement window and Tilt & Turn.
  • Profile Thickness – 1/16
  • Maximum Size/Sash – 51 3/16” x 94 1/2
  • Maximum Weight/Sash – 352lbs.
  • Available with single, dual or anodized finish. 
  • Polyester powder coating to AAMA 2604.
  • Evaluated and tested to AAMA 101 standards for windows and doors, meeting the CW PG50 grade. 

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