Duoline Windows by Drutex S.A.

Duoline windows are a combination of classic and warm wood with modern and durable aluminium construction.

Massive profiles give unique aesthetics, making them also resistant to static loads. The system is available in three versions depending on the installation depth: 68mm, 78mm, 88mm.

Energy efficiency:




Quality/Price Ratio:



Each Duoiline window is equipped as standard with a 1-chamber glazing unit. The 2-chamber glass package consists of a 'float’ type glass with a thickness of 4 mm, a spacer frame with a width of 16 mm and a soft-coated thermofloat glass with a 4 mm thickness. The whole achieves a coefficient of U = 0.6 W

It is possible to equip the Duoline windows with a 3-chamber package with a U-coefficient of 0.5


The Iglo windows are equipped with the most modern fittings on the market – Maco Multi Matic KS, which ensure the highest level of security with fixed pins making it difficult to break in. Maco Multi Matic KS fittings are a new dimension of safety!

It is possible to adjust the fittings to anti-burglary standards. Ask for details when ordering.


The windows are covered with a five-year manufacturer’s warranty. The warranty does not expire in the case of clients’ individual, but proper, installation.

We provide post-warranty service support to customers using our company’s installation services.

Duoline parameters

Window U coefficient ranges from 0,85 – to 1,4
Acoustic insulation from 32 dB to 35 dB

Window profile

Duoline - 68

Duoline - 78

Duoline - 88

Authorized Installation

1. Mobile Consultancy

In the areas of Silesia and the surrounding area, we perform measurements and consultancy at every stage of your investment.

2. Minimizing the Costs

Assembly and transport costs of our products are offered on very favourable terms.

3. Service Guarantee

Apart from the manufacturer's warranty, which covers the purchased products, we provide service guarantee.

4. Maximum satisfaction

Only high-quality installation is able to guarantee correct operation of products, while maintaining their properties.

Dedicated sliding systems

Duoline PSK

Duoline HS