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LK78X – exceptional energy efficiency

The Purso LK78X door and window system offers exceptional airtightness, combining a very low U-value with excellent performance in all weather conditions and a stylish appearance. LK78X is a low-maintenance choice for applications such as inward- and outward-opening entrance doors, sliding doors, fixed windows, and inward- and outward-opening windows. The system requires minimal maintenance throughout its service life and can be recycled at the end of its life cycle.

All Purso building system products are made from 100% recycled Greenline aluminum.

Technical information
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  • Door U-value down to 0.8 W/m²K
  • Window U-value down to 0.7 W/m²K
  • Wind load resistance up to Class 5
  • Watertightness up to E1350
  • Modular system

Why LK78X?

  • Modular system that meets almost all door and window requirements cost-effectively
  • Best-in-class thermal insulation and sealing
  • Excellent sound insulation properties
  • Easy to maintain in all weather conditions
  • A Finnish product designed for Finnish preferences and conditions

Purso ECO

Purso’s ECO product family is the most energy-efficient choice for windows as well as lift and slide doors. The products’ thermal insulation is among the best in Europe, their functionalities can endure any weather conditions and their versatility leaves room for creative visions of the architect.

Get to know ECO products

Surface treatment adds character to the facade

Surface treatment is the key to a unique and durable facade. Purso’s anodizing and powder coating provide aluminium with a stunning appearance and strong protection against weather and wear – without compromises.

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References

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100% recycled Greenline aluminium

All our building system products are made of Greenline aluminium, which is 100% recycled. In our own remelt plant, aluminium scrap is melted and refined for reuse in our production.

Aluminium is an excellent material for recycling, as it retains its properties. Greenline aluminium meets all the same requirements as primary aluminium – with a significantly lower carbon footprint.

Read more about Greenline

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