and OTIIMA COMFORT system 


Imagine a sliding window with no visible frame profiles..
It is exactly what the Drain System offers you, a system completely built-in on the finish materials
Beyond that, the Drain System incorporates a drainage profile channel, able to drain a large amount of rainwater, even in extreme rainfall situations.
The Drain System achieved exceptional result in the watertightness test,
with an outstanding E1650 class (seven classes above the class 9A),
according EN 12208.

Thinking on sustainable architecture, we develop a new system solution that focus on the user comfort, with maximum thermal insulation. The Comfort System has been created to meet all the new passive house certifications, according to the most demanding label standards, such as Minergie and Passivhaus.

More information and Technical Details under REQUEST
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OTIIMA. Much,more than a Window, a System or a Brand.

ECOSTEEL is the owner company and the headquarter of the trademark OTIIMA - International commercial brand associated for three major activity areas: metal works, frameworks and art productions.
Property, Production and Commercialization of all works associated to commercial OTIIMA’s brand is lead by the company ECOSTEEL.
Internationally, the representation and commercialization of OTIIMA is ensured by each local partner or local alliance by previous agreement with ECOSTEEL Company.
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OTIIMA · Rua Manuel Dias 440 · Póvoa de Varzim 4495-129 · Portugal