+385 1 2479 601
upiti@metalistaklo.hr

Centar Male Privrede
„Savica-Šanci“. Majstorska 1E
10 000. Zagreb

CONTACT

minimal windows

minimal windows®

KMW-mallorca-villa-stephan-offermann_2-1

Embrace open living spaces

WHY KELLER?

Step into a world of endless light and extraordinary views with our minimal windows® double-glazed system. Featuring an elegant sash profile of just 21 mm, our aluminium windows redefine contemporary luxury and offer expansive views with nearly invisible frames.

Enjoy panoramic sea views, bathe under a shimmering night sky, or immerse yourself in the tranquillity of lush landscapes and gardens. Our large sliding panels, up to 4 meters high, bring nature indoors and erase the boundaries between interior and exterior spaces.

Minimalist design takes center stage in contemporary architecture. With clean lines, balanced proportions, and a focus on natural light, our minimal windows® system elevates any space — from exclusive villas to commercial projects.

With over 15 years of meticulous development, we have perfected the art of concealed floor tracks and ensured the effortless operation of our sliding elements. Enjoy the perfect blend of form and function, where architectural elegance meets unmatched ease of use.

Visible profile width: 21 mm
Maximum sash height: 4 m
Thermal transmittance coefficient: Uw ≥ 1.1 W/(m²K)
Maximum sliding sash area: up to 8.5 m²
Maximum fixed sash area: up to 18 m²
Maximum sash weight: 500 kg
Total insulating glass thickness: from 26 to 34 mm
Automated sliding sash: yes, up to 2,400 kg
Barrier-free access: according to DIN 18040-1, DIN 18040-2
Air permeability: Class 4 according to EN 12207
Watertightness: Class 8A according to EN 12208
Wind load resistance: Class C4/B5 according to EN 12210
Sound insulation: up to 39 dB according to ISO 717-1
Burglary resistance: up to WK2 (RC2) according to EN 1627
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KMW-mw-kmw-strow-house-stephan-offermann
KMW-mw-villa-brussel-stephan-offermann
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Advanced solutions

Add-on

Security

Add-on

Sliding sash “into the wall”

Add-on

Stainless steel track and rollers

Add-on

Drainage

Add-on

Flush installation

Add-on

Threshold-free transition

Add-on

Post-free corners

Optional accessories

Add-on

Insect protection

Add-on

Glass safety railings

Add-on

Motorization

Add-on

Color customization

Dodatak

Odvodnja

Dodatak

Ugradnja u ravnini

ULTRA-SLIM DESIGN, ENDLESS POSSIBILITIES

Thanks to their slim width, our aluminium frames virtually disappear from view, highlighting the minimalist elegance of the minimal windows® system. With unlimited installation options — from post-free internal or external corners, opposite units, and glass-to-glass corners to wall pockets where the unit completely disappears — our system offers maximum flexibility to suit any design preference. Choose from a wide range of colours and textures, including matte, gloss, or powder-coated finishes, to perfectly complement your space.

SPACIOUS SERENITY, SEAMLESS INTEGRATION

Our minimalist frame profiles blend seamlessly with floors, ceilings, and walls, creating spacious, open living areas filled with natural light. The original minimal windows® system offers sash heights up to 4 m and weights up to 500 kg per sash, while our four-track sliding systems redefine openness and bring exceptional architectural visions to life.

We approach our projects with care

Keller Minimal Windows 6
Keller Minimal Windows 4
Keller Minimal Windows 5
Keller Minimal Windows 7

Other products

minimal windows® NGS

The new generation of minimal windows® NGS products enables a seamless transition between indoor and outdoor spaces through windows up to 6 meters high and of unlimited length.

minimal windows® 4+

Our triple-glazed product designed for use in low-energy and passive houses, fully compliant with current regulations.

minimal windows® curve

Custom-made curved glass elements. Let your imagination soar and create the unique home of your dreams.

minimal windows® highline

Keller minimal windows® highline solutions combine fixed façade elements with ultra-slim aluminium profiles on a single track, creating vast surfaces made entirely of glass.

minimal windows® pivot

Bring a unique, inspiring look and feel to your home. Suddenly, opening a door becomes an expression of style.

Contact information

+385 1 2479 601
upiti@metalistaklo.hr

Centar Male Privrede
„Savica-Šanci“, Majstorska 1E
10 000, Zagreb

INVESTITOR: Metali i staklo d.o.o.
PROJECT TITLE: Voucher for Creating the Website for Metali i staklo d.o.o
PROJECT GOAL (PURPOSE): To contribute to increasing the digital maturity level of the Applicant by investing in digital marketing, which will ultimately enhance competitiveness through the use of digital technologies.
PROJECT RESULTS: Completion of 1 website creation, 1 website created, 1 website tested and published, 3 hours of training conducted, 1 certificate of completed training obtained, 1 employee trained to use the website PROJECT DURATION: 20.11.2023. – 20.11.2024.
TOTAL PROJECT VALUE:
CO-FINANCED AMOUNT:
CONTACT PERSON FOR MORE INFORMATION: Tibor Turkalj, tibor.t@metalistaklo.hr

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Design by Michel studio

Security

Our systems are equipped with multi-point locking, providing excellent protection against burglary. They are certified according to standards for anti-burglary components and meet RC 2 resistance class requirements. Minimal windows® sliding systems are custom-made and tailored to the individual preferences and requirements of our clients. Additional optional features include linear drives, magnetic contact lock monitoring, or safety sensors. To ensure maximum security, our products are also compatible with a wide range of security accessories.

Sliding sash “into the wall”

Specially designed wall pockets allow minimal windows® sliding elements to completely disappear into the wall. Whether operated automatically or manually, these sliding elements become entirely invisible, creating a spacious and unobstructed living area.

Stainless steel track and rollers

Our stainless steel guide rail is fully integrated into the lower edge of the outer frame, ensuring optimal sliding performance and quiet operation of the sliding elements. The guide rail and rollers are perfectly matched, providing stability and effortless handling of sliding elements weighing up to 500 kg (1000 kg for 4+, 1500 kg for NGS).

Our self-centering integrated stainless steel rollers are built into the lower profile of the sliding elements, protected from dust and dirt to ensure long-lasting performance.

Drainage

Beneath the lower aluminium frame, our system features a specially profiled PVC base for efficient drainage and thermal bridge interruption. Alternatively, you can opt for an additional concealed drainage channel with a stainless steel cover for a minimalist appearance. Whichever minimal windows® system or combination you choose, we will tailor the drainage solution to your specific needs.

Flush installation

The outer frame blends perfectly with walls, ceilings, and floors, allowing for a frame installation that is seamlessly “embedded” into the wall cladding. This design provides an uninterrupted, threshold-free transition between indoor and outdoor spaces. Our flush floor-integrated frame profile ensures an elegant appearance.

Threshold-free transition

The built-in minimal windows® freeway track enables a threshold-free passage to the outdoor space, making it fully accessible. The outer frame is completely integrated into the floor, so the track is flush with the surface, eliminating any potential tripping hazards. The freeway system is tested, certified, and maintenance-free.

Post-free corners

Creating spacious, light-filled rooms — characteristic of modern architecture — requires flexibility. With our minimal windows® systems, you can design living spaces that seamlessly connect the indoors and outdoors. Our Full Glass Corner technology offers corner solutions without mullions and with full glazing, creating impressive interiors.

Insect protection

Ensure discreet protection from unwanted guests with integrated insect screens from Keller minimal windows®. These custom-made screens are nearly invisible and will not obstruct your view. You can match their color to the frame to maintain a harmonious appearance. When not in use, the screens can be easily retracted completely to the side or upward into a wall recess. Available systems include roller insect screens, pleated screens, and sliding door screens.

Glass safety railings

For floor-to-ceiling window openings, fall protection is essential. The strength, stability, and suitability of the materials are key to the design of railings. The minimal windows® guardline glass railings* combine superior quality and safety with elegant design. Thanks to modern seamless installation techniques, the components integrate perfectly into the overall architectural concept.

*Country-specific regulations must be observed.

Motorization

Enhance the functionality of your system with our adaptable solutions offering various concealed drive and locking options. Our motorized sliding elements can optionally be equipped with infrared sensors for automated operation. They can be controlled via remote control. Multiple sliding elements with a total weight of up to 2,400 kg can be moved quietly with a single drive.

Color customization

The aluminium frames of our minimal windows® systems are available in a variety of colors and finishes. You can choose powder-coated frames in a wide range of colors, including RAL, IGP, DB, NCS, and more, with matte, glossy, metallic, or textured finishes. Alternatively, you can select anodized frames ranging from silver to black, as well as Granodal® finishes. Customize our products to your preferences with a wide selection of options.

Odvodnja

Ispod donjeg aluminijskog okvira, naš sustav ima specijalno profilirano PVC podnožje, za učinkovitu odvodnju i prekid termičkih mostova. Alternativno, možete odabrati dodatno skriveni kanal za odvodnju s poklopcem od nehrđajućeg čelika za minimalistički izgled. Koji god minimal windows® sustav ili kombinaciju odabrali, prilagodit ćemo sustav odvodnje prema vašim potrebama.

Ugradnja u ravnini​

Vanjski okvir savršeno se stapa sa zidovima, stropovima i podovima te omogućava ugradnju okvira “utopljenog” u obloge zidova. Ovaj dizajn omogućuje neprekinut prijelaz između unutarnjih i vanjskih prostora bez pragova. Naš okvirni profil, koji je ugrađen u ravnini s podom, jamči elegantan izgled.

Address
Centar Male Privrede,
“Savica-Šanci”, Majstorska 1E,
10 000 Zagreb

Contact

+385 1 2479 601 ured@metalistaklo.hr

Adresa

Centar Male Privrede,
“Savica-Šanci”, Majstorska 1E,
10 000 Zagreb

Kontakt

+385 1 2479 601 upiti@metalistaklo.hr

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