The high-quality, economical and energy efficient Domlux A1 is the perfect staple window for any home. It has a tight, durable wood-aluminium structure and above-standard heat insulation. Available as both opening and fixed model.

Domlux A1

High technical quality

Designed in Finland, Domlux A1 is a high-quality choice that provides protection, safety and reliability. It fulfils all the challenges and requirements of living in northern conditions.

  • U-value up to 0,94 W/m²K
  • Reliable, long-lasting and easy to maintain
  • Made from top materials
  • Excellent selection of various glazings and accessories
  • Insulation glazing guarantees top-class heat resistance
  • Easy to install, thanks to the insulator screw

Operational Domlux A1

  • Oprational MSE ALU structure
  • Triple insulation, special Domlux sealant in inner frame
  • Standard or mansion profile
  • Leak-proof and reliable glazing method, outer and inner frame glazing glue bonded
  • Standard frame depths 131, 170 and 210 mm
  • Size limits usually: single-element 3 m² and multielement with intermediate jambs 6 m²

Fixed Domlux A1

  • Fixed MEK ALU structure
  • Exceptionally leak-proof
  • Large glass surfaces and slim frame profiles, perfect for a picture window
  • Sashless pane installation method with stylish finish
  • Standard frame depths 131, 170 and 210 mm, window board size according to frame depth on the inside
  • Size limit usually 4–6 m² (single-element or divided by intermediate jambs)
  • When looking for fixed windows larger than 5 m², contact us as early as possible
  • We can also provide fixed windows larger than 6 m²


  • Rate of heat transfer or U-value
  • Energy efficiency factor or E-value (FI)
  • Energy rating (FI)

Domlux A1

  • Rate of heat transfer or U-value 0.97–0.99 W/m²K
  • Energy efficiency factor or E-value (FI) 74–79 kWh/m², a
  • Energy rating (FI) A

Domlux A1

  • Rate of heat transfer or U-value 0.94–0.95 W/m²K
  • Energy efficiency factor or E-value (FI) 52–60 kWh/m²,a
  • Energy rating (FI) A+

Domlux glass options

Insulation glass

Domlux windows keep the heat indoors. Their standard features include groundbreaking insulation glass that has been meticulously designed and guarantees top-class heat insulation.

Energy-conserving glass

So-called selective glass is highly heat-insulating and conserves energy. Such glass includes extremely thin, invisible layers of metal on the surface of the glass to prevent the warm indoor air from escaping.

Solar protection glass

Solar protection glass prevents excess thermal energy due to the sun’s radiation from entering the building. The glass is available with various features; the selective Domlux Sunclear solar protection glass, for example, offers a great basic solution.

Safety glass

Safety glazing protects people and property and minimises the risk of accident-related injuries. Various pre-stressed and laminated glazing types are typical safety glazing solutions.

Fire protective glass

The purpose of fire protective glass is to protect people and property from flames and combustion gases.

The classification is usually required for the entire window structure; in other words, the use of fire protective glass in a regular window is not a sufficient solution.

Soundproof glass

Thickening the glass, using glasses of varying thicknesses and utilising a large intermediate space improves soundproofing in soundproof glass.

Decorative and special glass

Decorative and special glass is used to create a unique look and provide cover. It can be used in individual glass and in insulation glass elements. Special glass includes iron-free glass, one-way mirror, self-cleaning glass and facade glass.

Domlux A1

Colours and surface treatment

Domlux windows and doors come with the best surface treatment quality on the market. The wooden parts are finished by paint or lacquer according to your order. By special order, the colour of the wooden and aluminium parts can be adjusted from generally available colour charts, giving you numerous options from which to select.

Standard and basic colours for wooden parts

Standard and basic colours for aluminium parts