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heroal W 77 i

Block Window System for Maximum Transparency

The block window system heroal W 77 i combines a slim design and maximum transparency with top-grade heat insulation. The outer appearance of the window, its invisible sash ideally emphasizing the slim face widths of the system, and heat insulation values of Uf 1.0 W/m²K (standard average) meet highest architectural and energetic requirements. The filigree design makes the system especially suitable for residential and commercial construction. The concealed system fittings heroal WF 100 I in particular enhance the elegant design. The future-proof aluminium compound system is available with conventional inner glazing; its elements serve a number of purposes, including the use as curtain wall insert elements.

System dimensions

Profile depth [mm]

Frame profile
77
Leaf profile
84
Bar profile
77

Visible profile width [mm]

Frame profile
70 - 120
Leaf profile
verdeckt
Frame-Leaf combination
min. 81
Bar profile
114 - 194

Casement profi e variations

Push rod fitting groove [SBN]
Plastic fitting groove [KBN]

System properties

Glass filling strength [mm]
64
Max. leaf weight [kg]
150
Max. leaf heights [mm]
2400

Performance characteristics

1,0/101 Thermal insulation [Uf in W/m2K] / Profile width [mm]
4 Air permeability
Heat insulation (Uw in W/m2K) / Profile width [mm]
9A Resistance to driving rain
C5/B5 Wind resistance
1-4 Soundproofing class
RC 2 Resistance to burglary
1 Operating forces
3/5 Impact resistance
4 Mechanical resistance
Load-bearing capacity of safety equipment
3 Continuous function

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Your customers will know about your commitment to quality thanks to the “powered by heroal” label. Take advantage of targeted support for your company. As our partner, you will become an important part of the heroal brand, which means maximum support for your business. You will be able to purchase products from the entire heroal range and not just single components. You will therefore benefit from the highest level of system reliability.

  • Individual system and software training
  • First-class technical support
  • Individual marketing support, including website building
  • Personal support by responsible field sales team


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