The MB-104 Passive window and door system is an advanced solution, designed specifically for passive construction, where maximum energy efficiency is a priority. Passive House Institute Darmstadt certificates confirm the high quality and excellent thermal performance of MB-104 Passive, both for windows and doors.

MB-104 Passive offers excellent technical and airtightness parameters that provide thermal comfort and protection from the weather. The heat transfer coefficient for windows starts at 0.52 W/(m²K) and for doors at 0.62 W/(m²K), demonstrating their remarkable energy efficiency. The system also allows the installation of glazing up to 81 mm thick, allowing for a wide range of choices in terms of thermal insulation and security. Thanks to its robust construction, MB-104 Passive is able to withstand heavy loads and carry out large-scale projects.

Features of MB-104 PASSIVE, a window and door profile


Water resistance

AE 1800 class
PN-EN 12208:2001

Air permeability

class 4
PN-EN 12207:2001



Uw from 0.52 W/(m2K)



2 years warranty on fittings as standard, 5 years on profile

MB-104 Variants

The MB-104 Passive system is available in two main variants: MB-104 Passive SI, which offers very high thermal insulation, and MB-104 Passive Aero, which, with its even better thermal performance, is ideal for projects focused on maximum energy savings. These variants make it possible to fine-tune the system to meet the individual needs of users, guaranteeing comfort and energy efficiency at the highest level.

* Parameters given for the warm frame used.

Colors of MB-104 PASSIV windows

Colour palette

Glass catalogue

Product Catalogue

MB-104 standard:


Locking point
every 750 mm

okucia wielopunktowe

Multipoint fittings


Dublin handle

What do we offer in addition to the MB-104 system?


e.Volution 70 AD

Hidden hinges up to 3m

narożne przeszklenia

Corner glazing

smart home tablet

Smart home

The presented photos are for reference only. Due to the display technique and the conditions of taking photos, the actual appearance of the products, including their color, structure may differ from that presented on the website. The content of the website is informative and does not constitute an offer within the meaning of the Civil Code. Due to the continuous improvement of products, the information presented on this website may change.

See also

mb slimline

MB Slimline


MB 79N


MB 86N


MB Ferroline