References
The quality of our windows has already convinced many well-known customers! We’d like to present you a selection of our references:

- Category:
Low-energy office building
Year of construction 2016, usable area 3,600 m2 - Location:
D-76297 Stutensee - Passive house certified
- Energy-efficient and exceptional building:
Vollack, the expert for methodically planned, environmentally friendly and sustainable solutions in commercial construction, has used the seasonal ice latent heat storage system here for the first time. It is an intelligent storage medium for heat and cold and makes the building almost energy self-sufficient. - Windows and doors:
– ENERsign® Window
– ENERsign® balcony door
– ENERsign® lift and slide door
– Doors barrier-free
– Safety glazing - window and facade surface:
– total approx. 725 m2 - Wall integrated shading:
ENERstore round slat 80 mm, guide rails in side frames

- Category:
Single family house as passive house - Location:
US-80302 Boulder/Colorado
at 2,400 m altitude - Passive house certified
- Windows and doors:
ENERsign® Window
ENERsign® balcony door
ENERsign® Lift and slide doors - Glazing:
Single-pane safety glazing
3-fold (ESG/ESG/ESG)
with pressure compensating valve

- Category:
Single family house as passive house - Location:
D-77756 Hausach - Passive house certified
- Award
Winner GOLD of the “Efficiency Award for Building and
Modernisation” 2018 - Windows and doors:
ENERsign® Window
ENERsign® balcony door
ENERsign® front door
ENERsign® Lift and slide doors
Doors barrier-free
Safety glazing - Wall integrated shading:
ENERstore round slat 80 mm, guide rails in side frames

- Category:
Apartment building energy class AAA with 28 residential units and 45 pieces ENERsign® lift and slide doors
Area 2.800 sqm - location:
L-Luxembourg City - advantages of ENERsign® windows:
Installation thermal bridges reduced
WDVS thickness reduced to 180mm
excellent air tightness (n50 value) - Windows and doors:
ENERsign® window – 0.60 W/m2K
ENERsign® balcony door – 0.63 W/m2K
ENERsign® lift and slide doors – 0.60 W/m2K
Doors barrier-free
Frameless glass crash parapet –
ENERsign® glasguard – 42 pieces - Wall integrated shading:
ENERstore round lamella 80 mm
Guide rails in side frames

- Category:
Single family house as passive house - Location:
L-Remich - Passive house certified
- Windows and doors:
ENERsign® Window
ENERsign® balcony door
ENERsign® front door
ENERsign® Lift and slide doors
Doors barrier-free
Safety glazing
electronic closure monitoring “ENERtronic” - Wall integrated shading:
ENERstore Z slat 88 mm,
Guide rails in side frames

- Category:
Single family house as passive house - Location:
US-62901 Carbondale/Illinois - Passive house certified
- Windows and doors:
ENERsign® Window
ENERsign® balcony door
ENERsign® front door
ENERsign® Lift and slide doors
Doors barrier-free

- Category:
Single family house as passive house - Location:
US-80302 Boulder/Colorado
at 2,400 m altitude - Passive house certified
- Lift and slide door
4 parts (scheme C)
Width 10,400 mm / Height 2,430 mm - Windows and doors:
ENERsign® Window
ENERsign® balcony door
ENERsign® Lift and slide doors - Glazing:
Single-pane safety glazing
3-fold (ESG/ESG/ESG)
with pressure compensating valve

- Category:
Single family house as passive house - Location:
L-Beringen - Passive house certified
- Windows and doors:
ENERsign® Window
ENERsign® balcony door
ENERsign® front door
ENERsign® Lift and slide doors
Doors barrier-free
Safety glazing
ENERsign® glasguard
glass parapet - Wall integrated shading:
ENERstore Z slat 88 mm,
Guide rails in side frames