Architectural louvres have a diverse range of uses for both engineers and building designers.
Required on most buildings to allow airflow in and out of the building, architectural louvres often have to provide protection from rain ingress.
Louvres can also be used to provide aesthetic and economic screening for unsightly equipment or building façades.
CS have been manufacturing and selling louvres globally for over 60 years.
Why CS Architectural Louvres
- industry leading performance characteristics
- unparalleled global experience
- worldwide technical support
- first class innovation & designs
- most spatially efficient models on the market
- up to 100% rain defence with some models
- robust blades up to 3x thicker than rolled blades
- up to date, relevant test information
Extensive Range Featuring
Rain Defence
Airflow
Screening
Acoustic
Louvre pressure drop is one of the key parameters of establishing the louvre requirements for your project as it’s based on the needs of the building and its ventilation system, rather than “free area” which doesn’t really mean anything.
Pressure drop is defined as the pressure differential from one side of a louvre to the opposite side, often expressed in Pascals (Pa). Louvre pressure drop occurs when frictional forces, caused by the resistance to flow, act on air moving through a louvre.
Increased louvre pressure drop can prevent equipment inside the ventilated area drawing sufficient air through the louvre, resulting in overheating, as the equipment has to work harder to draw the air through.
Guidance
Air Density (ρ)
is generally 1.225 kg/m³ (at sea level)
Volumetric Flow (qv)
is supplied by the ventilation engineer and relates to the amount of air required through the system
Core Area (A)
The minimum height times the minimum width of the front opening in a louvre assembly with the louvre blades removed.
Discharge Loss Coefficient (CD)
See chosen louvre model testing information.
Discharge Loss Guidance
| Louvre Model | Penetration Class | Airflow Class | Discharge Loss Coefficient |
|---|---|---|---|
| RSH-5700 | A up to 3.0m/s | 3 | 0.289 |
| RSV-5700 | A up to 3.5m/s | 3 | 0.297 |
| RS-5605 | A up to 3.5m/s | 1 | 0.466 |
| A-3105 | D up to 3.5m/s | 2 | 0.391 |
| A-4080 | C up to 1.0m/s | 2 | 0.38 |
| A-4085 | C up to 1.0m/s | 2 | 0.38 |
Use the table below to compare our Rain Defence & Ventilation Louvre models to find the right model for your project.
| Model | Type | Blade Orientation | Appearance | Louvre Depth | Blade Pitch | Penetration Class | Airflow Class | Airflow Coefficient |
|---|---|---|---|---|---|---|---|---|
| RSH-5700 | Rain Defence | Horizontal | Modular [Visible Mullions] | 129mm | 51mm | A [up to 3.0m/s] | 3 | 0.289 |
| RSV-5700 | Rain Defence | Vertical | Modular [Visible Mullions] | 129mm | 51mm | A [up to 3.5m/s] | 3 | 0.297 |
| RS-5605 | Rain Defence | Vertical | Modular [Visible Mullions] | 131mm | 25mm | A [up to 3.5m/s] | 1 | 0.466 |
| A-3105 | Ventilation | Horizontal | Continuous [Hidden Mullions] | 127mm | 75mm | D [up to 3.5m/s] | 2 | 0.391 |
| A-4080 | Ventilation | Horizontal | Modular [Visible Mullions] | 102mm | 100mm | C [up to 1.0m/s] | 2 | 0.38 |
| A-4085 | Ventilation | Horizontal | Continuous [Hidden Mullions] | 153mm | 100mm | C [up to 1.0m/s] | 2 | 0.38 |
