Ventus
Paraflow Dual Blade Louvres
Louvres, the most practical window system, open to provide optimal ventilation,
Ventus Paraflow Dual Blade Louvre adds an extra layer of performance when closed.
High-performance louvre gallery
Developed for both residential and commercial applications, the system is versatile and suited to a wide range of installations including floor-to-ceiling and high-set windows. It provides architects, builders, and occupants with an energy-efficient, high-performance option with excellent ventilation capabilities that enhances comfort and sustainability in any setting with meeting the newest building codes on energy efficiency.
When it comes to optimising natural ventilation, louvres stand out as the most practical window system. They offer minimal resistance to airflow when opened, provide protection on rainy days when tilted, and can be closed to seal the home against the elements.
Weather Protection: 450 Pa
Acoustic Performance: Rw 32
Thermal Efficiency: U-value 2.8
Customisation
Every Paraflow Louvre can be customised in height and channel colour to perfectly suit or match in the installation location.
Manual Handle Low profile
Auto Louvres Electric control with plug & play automation
Satin Black channel only
Pearl White channel only
City Silver channel only
Clear Anodised channel only
Custom Request channel only
Black
White
Silver
Standard Height Preset heights utilising full clip and blades
Top Clip Loose For blade cut down to custom heights
Performance & Testing
Achieving up to 450 Pa water-penetration resistance, the system’s blade overlap and double seals guard against air and moisture. Its dual-blade configuration forms a continuous barrier against wind-driven rain, delivering higher ingress defense in harsh conditions.
The dual-blade configuration utilises an air gap to effectively help dampens sound, achieving an Rw 32 rating in tests. This performance suits typical apartment and mixed-use façade targets for busy roads, rail corridors, and flight paths, making it ideal for dense urban settings.
Designed for thermal efficiency in mind, our dual glass blade system adds a secondary insulating layer that cuts heat transfer. Independent testing returned a U-value of 2.8, helping keep interiors comfortable while reducing energy demand.
Louvre Gallery Charts
A valuable resource for our window fabricators – view and download our comprehensive Paraflow Dual Blade Louvre Charts featuring gallery heights, and locations for handles.
The Louvre Gallery chart is a handy tool to help work out your cutdown lengths in consultation with Doric technical representative.
Resources
Have questions? Visit our FAQ for answers to commonly asked questions.
For brochures and information documents download from our product resources.
Ventus Automation Hardware.
Doric’s Ventus Automated Hardware range provides motorised control for awning windows and Ventus Louvre Galleries in Residential and Commercial applications.
