Fully Sealed
In the closed position, the window operates as part of the high-performance MasterLine 8 platform, providing the normal sealed building envelope.
Acoustic Natural Ventilation Window
MasterLine 8
MasterLine 8
SoftTone
An innovative parallel-opening aluminium window designed to combine natural ventilation with advanced acoustic comfort in demanding urban environments.
Fresh Air · Less Noise · Better Urban Living
01 / Overview
Urban Acoustic Comfort
Open the window.
Open the window.
Keep the city outside.
Reynaers MasterLine 8 SoftTone is a specialised parallel-opening aluminium window designed for buildings where natural ventilation is desirable but external noise makes conventional window opening uncomfortable.
Integrated acoustic elements help absorb and reduce incoming sound while fresh exterior air continues to circulate through the opening.
The result is a sustainable architectural solution particularly suited to urban residential, hospitality and commercial buildings located close to busy roads, railways, airports and other high-noise environments.
42 dB
Noise Reduction
Acoustic reduction capability while ventilating, depending on final configuration.
2.6 m
Maximum Height
Tall parallel-opening elements for contemporary façades.
1.7 m
Maximum Width
Generous window width while retaining the SoftTone concept.
200 kg
Maximum Load
Dedicated parallel-opening hardware for substantial elements.
02 / Acoustics
Quiet Natural Ventilation
Fresh air without
Fresh air without
opening the door to noise.
−42 dB
Acoustic Reduction*
Sound-absorbing components are positioned around the parallel opening to reduce exterior noise while still allowing natural airflow into the building.
Acoustic Absorption
Dedicated SoftTone acoustic components help reduce sound transmission through the ventilation opening.
Natural Ventilation
Fresh exterior air can enter without requiring the window to open like a conventional casement.
Urban Comfort
Particularly valuable for homes and workplaces exposed to continuous traffic, rail or other environmental noise.
Passive Cooling
Natural airflow can help support passive cooling strategies and reduce dependence on mechanical ventilation during suitable weather conditions.
03 / Operation
Parallel Opening Technology
A different way
A different way
to ventilate.
Instead of swinging inward or outward from one side, the SoftTone sash moves outward in parallel to the frame, creating a controlled ventilation gap around the element.
Parallel Opening
The complete sash moves outward approximately parallel to the frame rather than pivoting around a conventional side or bottom hinge.
Controlled Airflow
The perimeter opening allows air to circulate while the surrounding SoftTone construction helps reduce the amount of external noise reaching the interior.
04 / Comfort
Natural Indoor Comfort
Air movement
Air movement
with less mechanical intervention.
Natural Ventilation
Efficient Air Exchange
The parallel-opening principle creates ventilation around multiple sides of the window, allowing fresh air to enter and warm interior air to escape.
Passive Strategy
Reduce Mechanical Cooling Demand
During suitable exterior conditions, natural ventilation can contribute to passive cooling strategies and help reduce dependence on mechanically conditioned air.
05 / Technical
Technical Specifications
Acoustic engineering.
Acoustic engineering.
MasterLine architecture.
Core dimensions and system characteristics specifically associated with the MasterLine 8 SoftTone parallel-opening solution.
Reynaers MasterLine 8 SoftTone
Parallel-Opening Acoustic Ventilation Window
Dimensions & Construction
Minimum Height
1100 mm
Minimum Width
850 mm
Maximum Height
2600 mm
Maximum Width
1700 mm
Maximum Hardware Load
200 kg
MasterLine Frame Depth
77 mm*
Opening Principle
Parallel Opening
Hardware
Parallel Hinges
Acoustic & Design
Acoustic Reduction
Up to 42 dB*
Intended Noise Environment
Approx. 53–60 dB*
Natural Ventilation
Yes
Passive Cooling
Supported
Standard Handles
Touch / Horizon
Colour Options
RAL Range
Powder Coating
Standard / Matt / Coatex
Integration
MasterLine 8 Framework
*SoftTone performance depends on element dimensions, glazing, acoustic cassette configuration, building details and project-specific conditions. The 77 mm depth refers to the underlying MasterLine 8 frame platform. Final acoustic, thermal and weather-performance values should be verified against the applicable Reynaers project documentation.
06 / Urban Performance
Designed for the City
Urban noise outside.
Urban noise outside.
Natural comfort inside.
Acoustics
Up to −42 dB
Acoustic attenuation while the SoftTone ventilation concept is in operation.
Ventilation
Natural
Exterior air enters through the controlled parallel perimeter opening.
Cooling
Passive
Supports passive night-time and seasonal cooling strategies where conditions allow.
Platform
ML8
Integrated within Reynaers' MasterLine 8 architectural window family.
07 / Applications
Where SoftTone Makes Sense
Designed for places
Designed for places
where opening a window is difficult.
01
Busy Roads
Residential and commercial buildings exposed to traffic noise
02
Railways
Buildings close to railway infrastructure and stations
03
Airports
Projects affected by frequent aviation noise
04
City Centres
Dense urban environments requiring natural ventilation
08 / Integration
MasterLine 8 Integration
Special technology.
Special technology.
Consistent architecture.
01
MasterLine Framework
SoftTone is based on Reynaers' MasterLine 8 frame platform, allowing it to integrate with the broader architectural window system.
02
Side-by-Side Elements
Fixed glazing and standard opening MasterLine elements can be positioned alongside the SoftTone parallel-opening cassette in coordinated façade compositions.
03
Architectural Consistency
The specialised acoustic functionality is integrated without turning the façade into a visibly separate mechanical ventilation installation.
Key Features
SoftTone
SoftTone
at a glance.
An acoustic parallel-opening window developed for natural ventilation in demanding urban locations.
- Parallel-opening window system
- Natural ventilation while open
- Noise reduction up to approximately 42 dB*
- Designed for noisy urban environments
- Maximum height up to 2600 mm
- Maximum width up to 1700 mm
- Minimum dimensions 1100 × 850 mm
- Maximum hardware load up to 200 kg
- MasterLine 8 system integration
- Touch & Horizon handle options
- RAL colour selection available
- Supports passive cooling strategies
Acoustic Ventilation Projects
Bring fresh air in. Keep disruptive noise out.
Contact Mparolas for Reynaers MasterLine 8 SoftTone technical information, acoustic requirements, window configurations and project-specific aluminium solutions for demanding urban environments.
