LK90ECO Window System
Window U-value ONLY 0.64 W/m2K!
LK90ECO is a versatile, highly insulated, and durable window system. Manufactured from recycled aluminium, it combines superior thermal insulation with elegant design into a timeless solution that delivers maximum energy savings. Choose a durable full-aluminium window system without compromising on energy efficiency!

- Window U-value down to 0.64 W/m2K!*
- Unique thermal break structure
- Available with burglary and fire protection (special construction)
- Inside and outside surface of profiles can be in different colours
- Surface treatment options: powder coating and anodizing
- Concealed hinges
- Frame depth 90 mm
- Maximum weight of one sash 130 kg
* Inward and outward opening windows 1230×1480, Ug=0,5

LK90ECO fixed window
- Sash width: project-specific
- Height: project-specific
- Max. weight: project-specific

LK90ECO inward opening side-hinged window and turn-and-tilt window
- Sash width: 590–1490 mm
- Height: 640–2400 mm
- Max. weight: 130 kg

LK90ECO outward opening side-hinged window
- Sash width: 590–1490 mm
- Height: 640–2400 mm
- Max. weight: 100 kg

LK90ECO inward opening bottom-hinged window
- Sash width: 590–1490 mm
- Height: 640–2400 mm
- Max. weight: 80 kg





