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Top 90 PVC windows

Excellent thermal insulation with numerous design variants

Are you looking for excellent thermal insulation and a wide range of designs? Top 90 meets both demands simultaneously. 

With its high-quality insulation glazing Top 90 is our best PVC window system. It offers excellent heat insulation and a high degree of energy efficiency. Our fitting  and sash variant s can meet every need, while the concealed hinge s create an even lighter appearance.

The benefit for you: significantly reduced energy costs and all-round living comfort.



Top 90 Classic-line

With its classic lines and standard double glazing, Classic-line offers outstanding thermal insulation and an appealing, contemporary design.
heat insulation:
UW  up to 0.75 W/m²K
sound insulation:
RW  up to 45 dB 

Top 90 Step-line

Our traditional line: Step-line windows have impressively simple yet striking outlines, and of course possess excellent heat insulation values.
heat insulation:
UW  up to 0.75 W/m²K
sound insulation:
RW  up to 45 dB 

Top 90 Nova-line

Clear lines and excellent views: the frameless outside sash  of Nova-line provides your living quarters with plenty of light. Another bonus for our best thermal insulation window.
heat insulation:
UW  up to 0.78 W/m²K
sound insulation:
RW  up to 42 dB 

Top 90 Nova-line Plus

Nova-line windows can now be even more harmoniously matched to your façade, with the plus of high-quality enamelling available in a choice of nine stylish colours. Maximum views and excellent thermal insulation are – as always – included.
heat insulation:
UW  bis 0.73 W/m²K
sound insulation:
RW  bis 44 dB 

Top 90 Twin-line Classic

Classic appearance, greater added value: The slender outlines have an attractive contemporary design. The solar and visual protection is integrated into the cavity between the glazing and thus shielded from dust and rain. Very high sound insulation also comes as standard.
heat insulation:
UW  up to 0.80 W/m²K
sound insulation:
RW  up to 47 dB 

Top 90 Twin-line Nova

Modern appearance, greater added value: The sash , frameless on the outside, has an attractive contemporary design. Blind s or pleat s: both are protected from dirt, wind and weather. Very high sound insulation also comes as standard.
heat insulation:
UW  up to 0.83 W/m²K
sound insulation:
RW  up to 44 dB 

Quality hallmarks

Thermal insulation and heating cost savings

Good thermal insulation reduces heating costs in winter and acts as a heat shield in summer.
Our windows feature modern thermal insulation glazing with high insulation values for the window frames.
To energy savings
 Watch video 

Protection against break-ins

Security is a good feeling.
Even the standard versions of Finstral windows are difficult to prise open. The standard security fitting can if necessary be upgraded to provide even stronger protection against break-ins.
More about protection against break-ins
 Watch video 

Protection against injury

Safe should mean safe.
The extensive use of glass in private homes also means that safety is of ever increasing importance.
More about protection against injury

Bespoke products and design

Finstral windows and doors are made-to-measure in terms of form and function. We match your windows exactly to your home and your individual needs.
To the wide range of design possibilities

Opening and ventilation comfort


Our easy-to-operate quality fittings

Child’s play, child-proof

Our fitting s match our windows for quality. They offer outstanding ease of use and are lastingly reliable. Even the basic version provides good safety standards that can be upgraded on request. Our numerous equipment options can provide an optimal solution for your individual needs.

Quality-tested tilt-and-turn opening

Our quality-tested tilt-and-turn fitting  is equipped as standard with a two-point security lock  and mushroom bolt s. This makes it very difficult to prise open the sash .

The surrounding roller bolt s provide even pressure for the window against the seals. This ensures full and effective sealing. The sash lifter  raises the sash  into the correct position. The window can be easily closed and will remain free of wear for a long time.

If you want more protection against break-ins we offer two even more effective security packages, Protect Plus and Protect Safety Plus.

Find out about our security packages

Additional equipment for fittings


Concealed hinges

For a yet lighter and more linear interior appearance we recommend fitting  concealed hinge s. Note however when planning that their opening angle is limited to 95°.

Summer-winter energy-saving hinge

Our summer-winter hinge  allows you to reduce the normal tilt opening from 170 mm to 40 mm. A simple movement is enough to optimise ventilation and save energy.

Gap ventilation

We have developed gap ventilation for rooms that need to be slightly ventilated on a permanent basis. In the bedroom, for instance, good ventilation means good sleep. The gap ventilation is easily adjusted using the window handle.

2-stage turn opening

Turn instead of tilt: the ideal solution for very high or individually shaped windows. Ventilation is via a small fixed turning opening.


The ideal solution for children's rooms or schools. Without a key, tilt-before-turn windows can be only be tilted, allowing you to ventilate in peace and safety.

Twist lock

The twist lock allows the window to be opened in the tilt position, but it cannot be turned and opened. 
It is also used for child safety purposes or to restrict the opening of windows in schools or other public buildings.

Sash limiter

The sash  limiter limits the opening of the sash  to 90° and prevents it from closing by itself. Short, intense airing is easier because the sash  limiter can resist even powerful draughts.

Window rabbet ventilator

The controlled supply of fresh air provides permanent, energy-saving continuous ventilation via the window rabbet. Air humidity can escape, minimising the risk of mould formation.

Lockable doors

The lockable terrace door has a simple mechanism that allows you to operate and lock the door from both sides. Like the tilt-and-turn fitting , it also integrates two security locks with mushroom bolt s.

Skylight opening


Skylight opening

Skylights allow more natural light to enter your rooms, increasing your sense of living and saving energy. The skylight is easy to operate using a lever, crank or motor, while the concealed hinge s (optional) create an attractive appearance.



Complete accessories

Everything for your new Finstral window

Whether for handles, sash  bars or shades, our product range can always offer the right solution. All of our accessories are specially co-ordinated with Finstral’s window and door system.

Window handles

To make sure your window looks good and is easy to operate, Finstral offers window handles with their usual wide range. High-quality products ranging from modern to classic.



Antique white


Pearl white


Silver-coloured EV1










Stainless steel handle


Press-button handle


Lockable handle


Cross handle


Solar protection


Window sensor


Sash bars


Visual protection


Protection against insects






Finstral dealers in your area

We have sales and installation partners in numerous European countries.

Simply enter your position, place of residence or postcode to see the nearest Finstral dealer in your area.

Questions about our dealer search?

Contact us and we will find the nearest Finstral dealer in your area for you.
 To contact form