TIMM W 56/90

  • Visible sash / Classic
  • Narrow views
  • High burglary protection
  • Bullet-resistant construction
  • Passive house / low energy
  • High sound insulation
  • Smart Home
  • Integrated gap ventilation
  • Integrated sun protection
  • Monument protection

TIMM W 56/90

High-performance timber box-type window for the highest requirements with narrow views

The TIMM W 56 / 90 timber casement window is our high-performance timber casement window and is suitable for all properties with the highest thermal, burglary protection or sound insulation requirements, which can also be combined with each other and where the focus is still on the narrowest views.

  • Narrow profiles on the sash, forend, transom and mullion for high light incidence
  • The classic putty bed glazing meets the requirements of listed building protection
  • Available with various historical sash contours for individual design freedom
  • Optionally available with weather-protected sun protection between inner and outer sash, for demand-oriented summer heat protection and privacy protection
  • The most striking visual trademark of our wooden windows is the unique feature of the closed sill joints at all joints. This solution not only impresses with its seamless appearance, but also with the significant improvement in structural wood protection and the increase in stability in all corner joints
  • High sound insulation possible
  • Excellent thermal insulation. Passive house-compatible window constructions possible without ecologically harmful insulating materials
  • Tested burglar resistance up to RC4 and bullet resistance up to FB4 NS

Technical data


TIMM W 56/90

Installation depth [mm]


System / Material / Material


Product category



Box window

max. Thermal insulation [W/m²K]


max. Sound insulation [dB]


Burglary protection

up to RC 4

Proofing class according to DIN EN 1522


min Sash view outside/inside [mm]

37 / 74

min. Post width [mm]


min. Faceplate width [mm]


min. Transom width [mm]


min. - max. Glass thickness sash [mm]

4 / 14 ... 24 / 55

min. - max. Glass thickness Fixed glazing [mm]

npd = no performance determined = No performance determined, or without request


Security systems

More protection against burglary and bullets

Our mechanical security systems meet your requirements for protection against break-ins and bullets.

Maintenance & Service

Preserving values through maintenance & service

We offer comprehensive maintenance/maintenance and repair services for windows, doors and façades.


Thanks to our many years of experience in the construction of listed buildings, our timber window constructions have always been developed with the narrowest face widths.
Our insulating glass windows, composite windows or box-type windows are therefore not only impressive in old buildings, but also as visual highlights for design-oriented architects and planners in new buildings.

Our designs combine the slender and elegant window contours of bygone eras with the technical innovations and features of today.

In addition to the narrowest profile views in accordance with the historical design, our TIMM W 56/90 timber box-type window is available in various historical sash contours.

The optional version with classic putty-bed glazing meets the requirements of listed building protection.

The optional weather-protected solar shading between the inner and outer sashes provides demand-oriented thermal insulation in summer.

This also creates a privacy screen.

The most striking visual trademark of our wooden windows is the unique feature of the closed sill joint at all corner joints. It fulfills the desire of many architects and building owners for a design-oriented window.

Our closed parapet joint is a return to the high heritage of craftsmanship and precision of our window construction forefathers – translated into the modernity of CNC production and thus represents an absolute architectural and technical highlight.

In addition to the visual enhancement of the joint patterns, our solution improves the structural wood protection and ensures increased stability in all corner joints.

Our timber window systems stand for maximum comfort. They impress with their ease of use, simple handling and optimum functionality.

Equipped with two seals, our timber window systems offer excellent sound insulation values and the best tightness values, even against increasingly frequent extreme weather situations.

Our self-developed third seal in the faceplate area further optimizes the tightness values against noise and driving rain on the one hand and prevents blocking (sticking together of the paintwork) on the other.

We implement very high noise protection requirements with special sound-insulating glass in insulating glass windows or with box-type or composite window constructions.

For increased living comfort, we supply our Tilt&Turn windows with integrated gap ventilation as an additional ventilation function as standard.

The right timber window system for every thermal insulation requirement.
Our extensive system portfolio offers a selection of different construction depths and design variants to meet today’s requirements for energy-efficient buildings.

Thanks to our large construction depths, extremely narrow profile widths, the largest possible proportion of glass surfaces and thus maximum use of passive solar energy, as well as an intelligent combination of materials, we achieve outstanding thermal insulation properties, including passive house suitability, without the use of ecologically harmful insulating materials.

Timm stands for a high level of expertise in the field of security and has had a wide product range of certified security windows for decades, making us one of the few companies in Germany to be listed in the State Office of Criminal Investigation’s (LKA) list of manufacturers.

Our timber windows are already equipped with security mushroom cams and security strike plates as standard, making them difficult to pry out.

With tested burglar resistance up to RC 4 and bullet resistance up to FB4 NS, the TIMM W 56/90 timber box-type window meets the highest security requirements.

Additional security components (alarm contacts, alarm glass, alarm mats, etc.) can be easily integrated into our windows.

Product family



Product alternatives


TIMM W 38/90


TIMM W 56/68




Die innovativsten Lösungen der Branche

Auf rund 850 m² Ausstellungsfläche präsentieren wir Ihnen in unserem Showroom an über 60 Exponaten die aktuellsten und innovativsten Lösungen der Branche aus den Bereichen Aluminiumfenster, Holzfenster, Holz-Alu Fenster und Stahlfenster sowie Sicherheitsfenster und Fassaden.

Architekten, Bauherren und Partnern im Objektgeschäft bieten wir die Möglichkeit, alle Arten und Designsprachen von Fenstern und Fassaden zu erleben und sich von unserem vielseitigen Produktportfolio begeistern zu lassen. Wir laden Sie herzlich ein, diese Erlebniswelt für Ihre Bauvorhaben und Planungen zu nutzen.

Hinweis: Bitte besuchen Sie uns nach einem vorab mit uns vereinbarten Beratungstermin, da unser Showroom nicht auf Publikumsverkehr und spontane Besuche ausgerichtet ist.



Hans Timm Fensterbau GmbH & Co. KG
Motzener Str. 10
D-12277 Berlin

Beratungs- & Angebotsanfragen:
+49 30 720 831-70

Service-, Reparatur- und Wartungsanfragen:
+49 30 720 831-60
+49 30 720 831-0


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